The best word to describe fossils that are secured in limestone and sealed over time is embedded.

The sentence is saying that since the forest is so quiet, even soft sounds can be distinctly heard. Another way of saying this is to describe the sounds as "perceptible," or easily perceived.

In this sentence, the correct answer is one that indicates that it rarely rains in the desert regions; therefore, the correct answer is seldom. It doesn't continually rain, but it also doesn't remain absolutely without rain.

We can infer that because the accused rival was eventually proven to be innocent, that he was only thought to be a criminal, but wasn't actually. So, we need to pick out an adjective for the blank that means something like "supposed." "Actual," then, cannot be the correct answer because "actual" is an antonym of "supposed." "Alleged," however, is an adjective that refers to incidents or people and means "said, without proof, to have taken place or to have a specified illegal or undesirable quality." Because "alleged" is the answer choice that best described the supposed thief and best fits the context of the sentence, it is the correct answer.

We can infer that because the CDs are arranged "beginning with the artist's earliest works and concluding with his most recent albums," they are arranged according to the time at which they were released. So, we need to pick out an adjective for the blank that means "having to do with time." While "timely" might look like a potentially correct answer, "timely" actually means "done or occurring at a favorable or useful time; opportune," not "having to do with time." So, "timely" cannot be the correct answer. "Chronological," however, can mean "starting with the earliest and following the order in which they occurred" when referring to a record or events; one can tell that the meaning of "chronological" has to do with time because of the root "chrono-", which means "relating to time." Because "chronological" is the answer choice that best describes the order of the CDs and best fits the context of the sentence, it is the correct answer.

We can infer that we need to pick out an answer choice that means something like "mobile" because we know that Francine's art set "came in a case that stored all the supplies and could be taken with on trips." So, "stationary" cannot be the correct answer because "stationary" means "not moving" and we know that Francine's art set is able to be moved. "Portable," an adjective that means "able to be easily carried or moved, especially because of being a lighter and smaller version than usual," best fits the sentence's context, so it is the correct answer.

We can infer that because the dog "tried to bite and scratch everyone, including its owner," it must not have been very friendly and was trying to hurt other people. So, we need to pick out an adjective to describe the dog that means something like "unfriendly" or "intending to hurt others." So, we know that "friendly" cannot be the correct answer because the dog is clearly not "friendly," and "friendly" is an antonym of "unfriendly," the word similar in meaning to the word we're looking for. "Malicious," however, is an adjective that means "characterized by malice; intending or intended to do harm." Because "malicious" is the answer choice that best describes the dog in the sentence, it is the correct answer.

We can infer that because the child "constantly complained about whatever plans the suggested," we need to pick out an adjective that means something like "complaining." So, "patient" cannot be the correct answer, because if one is patient, one doesn't complain much. "Querulous," however, is an adjective that means "complaining in a petulant or whining manner," and because "querulous" best describes the complaining child in the sentence, "querulous" is the correct answer.

We can infer that because Ralph "forgot to feed [his goldfish] for almost a week" that he wasn't very responsible. So, we need to pick out an answer choice that means something like "irresponsible." So, "dependable" cannot be the correct answer, because "dependable" means "trustworthy and reliable," making it an antonym, not a synonym, of "irresponsible." "Negligent," however, is an adjective that means "failing to take proper care in doing something," and because "negligent" best describes how Ralph failed to feed his goldfish for nearly a week, "negligent" is the correct answer.

We can infer that we need to pick out a verb that means something like "make people obey," because "if no one can make people obey them, they won't make any difference to a state or country." "Contradictory" may look like a potentially correct answer, but "contradictory" means "containing elements which are inconsistent or in conflict," so it would not make sense to claim that "laws have to be contradictory." "Enforceable," however, is an adjective that means "able to have someone compel observance of or compliance with (a law, rule, or obligation)," and because "enforceable" best describes a necessary quality of laws, "enforceable" is the correct answer.