Here, there is a subject-verb agreement problem. The subject is “number,” which is singular. The verb “have” does not match up with “number” because it is plural. We need to say “number . . . has.”

In the incorrect version, there is a subject-verb agreement problem: the subject (comic book) is singular, but the verb (are) is plural. In the correct version, the singular subject appears with the singular verb (is). Notice that the subject comes after the verb.

There are certain words, such as “majority,” that are plural or singular depending on the context and structure of the sentence. For example, “a majority” is usually plural while “the majority” is usually singular. In this case, however, there is an exception, as “the majority of something” should be plural (i.e. the vast majority of boys are). Since "vast majority of boys feel social pressure from their peers" is the only answer in which the plural words "feels" and "their" are used, it is the correct answer.

This sentence contains an error in subject/verb agreement. Since the subject is “a pet dog,” a singular noun, the plural pronoun "they" should not be used. The neutral singular pronoun "it" should be used instead. This leaves answers "because of the reason that it is not a toy," "because it is not a toy," and "for the reason that it is not a toy," with "because it is not a toy" being the least wordy and awkward.

There are two main issues that need to be resolved in this sentence, and they both have to do with the correct use of adverbs and adjectives. The first issue is the phrase “extraordinary creative.” When modifying an adjective, an adverb has to be employed. Therefore, the sentence should read “extraordinarily creative.” This eliminates answers two potential answer choices. The next problem is the use of “best” in the phrase “the best of the two.” In this situation, the correct adjective is “better,” since it is a direct comparison between two people. “Better” is the comparative form while “best” is the superlative form. So, the correct answer is "In light of her extraordinarily creative budgeting proposal, a recent poll put Susan ahead of George in the race for governor and found her to be the better candidate of the two."

While it may initially appear that "people" is the subject of the sentence, "in five people" is a prepositional phrase, so "people" cannot be the subject of the sentence. "One" is actually the subject of the sentence. Given that "one" is singular, the corresponding verb is "is," not "are." When changing the verb to the appropriate form, it becomes apparent that one cannot refer to "first-generation immigrants" either, because that would mean saying that "one" is "first-generation immigrants," which does not make sense because one of the compared terms is singuar and the other is plural. To fix the sentence's error, one must not only adjust the verb "is" to "are," but also change the plural "first-generation immigrants" to the singular "a first-generaiton immigrant." So, the correct answer is "in that area is a first-generation immigrant."

The verb “channel” corresponds to a plural subject, “naturalness and effortlessness.” "Acting" is not the subject, which is a mistake that could cause a test taker to pick an answer choice that uses “channels,” the form of the verb that is used for singular subjects. Incorrect answer choices that use “channel” contain other errors. 

In this sentence, the verb does not agree with the subject. The subject, “wool skirt” is singular (“which features multiple textures” is a modifying phrase and doesn’t count), so the correct verb form is “is,” not “are.”

The sentence contains an error in how it formats its list. Each item in a list needs to be separated from other items in the list by a comma, and a comma needs to be used before the "and" that precedes the last item in the list as well. (This is called the "Oxford comma" and helps to prevent ambiguity in certain sentences.) So, the correct answer is "Taylor, Chris, and Morgan are names that parents can give to either a boy or a girl."

The error in this sentence has to do with the way commas are use in the list at the end of the sentence. When listing three or more things, commas should be placed between each item in the list, including after the last one, in order to avoid ambiguity.