Correct Answer: C

Rationale: In alphabetical order, 'Assemble, assembly, assembling, assembled' is correct. The alphabetical order is determined by the first letter of each word. The correct sequence starts with 'Assemble,' followed by 'assembly,' then 'assembling,' and finally 'assembled.' Choice A, B, and D do not follow the correct alphabetical order as the words are not arranged alphabetically.

Correct Answer: B

Rationale: The correct answer is B: 'apparent.' In the given sentence, 'overt' is used to describe signs that are evident or obvious. It indicates that Dr. Harris suspected Alicia might have the flu even though there were no clear or overt signs present. Choice A, 'concealed,' is incorrect as it means hidden or not easily visible, which is the opposite of 'overt.' Choices C and D, 'expert' and 'delectable,' are unrelated to the meaning of 'overt' in this context.

Correct Answer: C

Rationale: "Write" is incorrect in this context. It should be "right," referring to the correct or moral action.

Correct Answer: D

Rationale: The correct answer is 'impending,' which means something that is about to happen. Choices A, B, and C do not have the same meaning. 'Depending' refers to relying on something, 'offending' means causing anger or resentment, and 'suspending' means temporarily stopping or delaying something.

Correct Answer: B

Rationale: The word 'library' is incorrect in this context. It should be 'librarian' to be grammatically correct. The other choices ('an,' 'as,' 'during') are all grammatically correct and fit appropriately in the sentence.