Correct Answer: B

Rationale: The correct answer is B: 'dollars.' 'Bucks' is a slang term for dollars. The use of 'bucks' in this sentence is informal and colloquial compared to the other word choices, making it the slang word in the sentence. 'Cost,' 'steep,' and 'tag' are all standard English words that are not considered slang in this 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: The best way to revise and combine the underlined portion of the sentences is by using a semicolon to show a stronger connection between the two ideas. Using 'however' after the semicolon helps to contrast the innocuous superstition with the negative outcome that sometimes occurred, providing a smoother flow between the ideas. Choice A is incorrect as it lacks a proper conjunction or punctuation to connect the ideas. Choice B is incorrect as 'but' does not effectively contrast the ideas as 'however' does. Choice D is incorrect as a colon is used to introduce a list or explanation, which is not suitable in this context where a contrast is needed.

Correct Answer: D

Rationale: In this context, 'disciplines' refers to specific areas of study or fields of expertise. Therefore, the most appropriate synonym for 'disciplines' would be 'fields.' Options A, B, and C do not accurately convey the meaning of 'disciplines' in the given sentence. 'Locations' and 'regions' refer to physical places, while 'punishments' is entirely unrelated to the context of academic or professional fields of study.

Correct Answer: C

Rationale: In the sentence, 'widely' is used as an adverb. It modifies the adjective 'available,' describing the extent to which professional dental care is available. An adverb can modify verbs, adjectives, or other adverbs. In this case, 'widely' modifies the adjective 'available,' making it an adverb. Choice A, 'adjective,' is incorrect because 'widely' is not describing a noun. Choice B, 'noun,' is incorrect because 'widely' is not a noun. Choice D, 'verb,' is incorrect because 'widely' is not being used as a verb in the sentence.