In standard English, when you use the phrase "not only" in a sentence, it should be followed by the phrase "but also." So, the correct answer is "When she went to the zoo, Lyndsey got to see not only tigers, but also polar bears, iguanas, and toucans."

When "neither" is used in a sentence, "nor" should follow it, creating the structure "neither X nor Y," where X and Y are items formatted in the same manner. To correct the sentence, we need to change "and definitely not" to "nor." Several answer choices do this: "nor faithful to the original film," "nor were it faithful to the original film," and "nor was it faithful to the original film." "Nor were it faithful to the original film" and "nor was it faithful to the original film" might each look like potentially correct answers, but each introduces a verb that disrupts the parallel structure of "neither X nor Y," in which "nor" should be immediately followed by "faithful to the original film." The correct answer is thus "nor faithful to the original film," making the corrected sentence, "The remake of the film was neither enjoyable nor faithful to the original film."

Correlative conjunctions are used in specific pairs: "either" must be paired with "or" and "neither" must be paired with "nor" when you want to use them as correlative conjunctions. When using these correlative conjunctions, it is also important to remember to use parallel phrasing with each element that is being associated through the use of the conjunction.

The correlative conjunctions “neither” and “nor” belong together. In "neither . . . nor" sentences, the two options (“pleased with their poor work” and “willing to accept their rowdy behavior”) must be presented in a grammatically parallel way so that the words following “neither” and the words following “nor” are parallel phrases.

The correlative conjunctions “either” and “or” get paired together here. In "either . . . or" sentences, the two options being discussed (in this case, going to the toy store and going to the ice cream parlor) must be presented in a grammatically parallel way so that the words following “either” and the words following “or” are parallel phrases. In this case, “to the toy store” and “to the ice cream parlor” are the only options that are parallel; otherwise, you’re comparing apples and oranges.

Whenever you use the word "neither," the proper conjunction to follow it with is "nor." Therefore, here, you need to use "nor" rather than any of the other choices.

"Not only", when used at the beginning of a sentence, must be followed with the correlative conjunction "but also." Therefore, "John not only desired loyalty from his men, but also demanded their courage" is the best way to write the underlined portion of the sentence.

"than both the Civil War plus World War II" - This option contains a major error, in that it connects the Civil War and World War II with an improper conjunction "plus." "Plus" should only be used to discuss mathematical relationships, it is not a suitable replacement for the word "and" (which is the correct correlative conjunction for "both").

"than either the Civil War nor World War II." - This option uses the incorrect correlative conjunction of "nor" with "either." The correct correlative conjunction for "either" is "or."

"than either Civil War and World War II were." - This option again uses an incorrect correlative conjunction, incorrectly pairing "either" with "and." Also, the repetition of the verb "were" is unnecessary.

"than both the Civil War or World War II." - This option uses the incorrect correlative conjunction pairing of "both" with "or."

"than both the Civil War and World War II." - This option is correct, and features no error. It is the only option to feature a correct correlative conjunction pairing.

When using "neither" at the beginning of a sentence, it must be followed with the correlative conjunction "nor." Therefore, "Neither the teachers nor the students" is the best way to write the underlined portion of the sentence. "Or" is the correct correlative conjunction to use with "either." "Neither the teachers nor the students were pleased with the way the assembly was conducted" is the only version of the sentence that corrects the correlative conjunction error while creating no additional errors.

When "either" is used at the beginning of a sentence, it must be followed with the correlative conjunction "or." "Either you work for the crown, or you are against the crown" is the best way to write the underlined portion of the sentence. When "neither" is used "nor" is the necessary correlative conjunction.