Correct Answer: B

Rationale: The misspelled word in the sentence is 'astronemers,' which should be spelled as 'astronomers.' 'Astrophysicists,' 'techniques,' and 'technology' are all correctly spelled words in the sentence. Ensuring proper spelling is essential for effective communication and clarity. The term 'astronomers' refers to individuals who study celestial bodies, including stars, making it the correct answer in this context.

Correct Answer: B

Rationale: In this context, 'traditional' is used to describe the characteristic of a comic book that follows long-established conventions. The word 'conventional' is the most appropriate synonym because it implies something that follows standard or established practices. 'Old-fashioned' suggests something outdated, which is not the intended meaning here. 'Expensive' and 'popular' do not relate to the context of how comic books are released and do not align with the meaning of 'traditional' in this specific context.

Correct Answer: B

Rationale: The misspelled word in the sentence is 'astronemers,' which should be spelled as 'astronomers.' 'Astrophysicists,' 'techniques,' and 'technology' are all correctly spelled words in the sentence. Ensuring proper spelling is essential for effective communication and clarity. The term 'astronomers' refers to individuals who study celestial bodies, including stars, making it the correct answer in this context.

Correct Answer: C

Rationale: Option C is the correct answer because it disrupts the flow of the sentence and introduces unnecessary information. The phrase 'over the years since 1958' is irrelevant in this context and does not contribute to the intended meaning of the sentence. The sentence is focused on the recent changes to the pension, not its historical evolution. Choices A, B, and D provide clear and concise ways to revise and combine the underlined portion of the sentences, maintaining a logical and relevant sentence structure.

Correct Answer: A

Rationale: A compound sentence consists of two or more independent clauses that are joined by coordinating conjunctions such as 'and,' 'but,' or 'or.' In choice A, the sentence contains two independent clauses separated by the coordinating conjunction 'and': 'Plague, generally not a major public health concern, actually continues to spread among rodent populations today' and 'it even occasionally makes its way into a human host.' Choice B is a complex sentence as it contains a dependent clause 'which seeks answers to humanity's questions about its past' and an independent clause 'is significantly helped by new technologies.' Choice C is a simple sentence with one independent clause: 'In the fight against obesity, countries around the world are imposing taxes on sodas and other sugary drinks in an effort to curb unhealthy habits.' Choice D is a complex sentence with a dependent clause 'Because the assassination of President John F. Kennedy continues to haunt and fascinate Americans' and an independent clause 'new movies, books, and television series about it are released every year.'