A hundred years ago, automobiles were rare, but now cars are ubiquitous. However, she doesn't know what the word ubiquitous means. Which key context clue is essential to decipher the word's meaning?

Correct Answer: D

Rationale: The correct answer is 'D: Rare.' In the sentence, it is mentioned that 'a hundred years ago, automobiles were rare,' which provides the context that the opposite of rare would mean something very common, thus helping to decipher the meaning of 'ubiquitous.' Choice A, 'Ago,' refers to a time frame and doesn't directly provide a contrast to 'ubiquitous.' Choice B, 'Cars,' is mentioned in both parts of the sentence and does not help in defining 'ubiquitous.' Choice C, 'Now,' signifies the current time but doesn't contrast with 'ubiquitous' to aid in its understanding.

Correct Answer: D

Rationale: The transitional phrase 'As it turns out' adds a reflective tone that matches the surprise at how well the RV worked for the family. Choice A ('NO CHANGE') does not introduce any new information or transition. Choice B ('Not surprisingly, the RV') contradicts the surprise factor mentioned in the sentence. Choice C ('Furthermore, the RV') does not provide a suitable transition given the context of the sentence.

Correct Answer: B

Rationale: The correct answer is B: 'we would wake up, eat breakfast, and break camp.' The original sentence is a list of actions in the past, so the verb 'break' should also be in the past tense to maintain consistency. Choice A is incorrect because 'broke' is incorrect in this context. Choice C is a question format and does not fit the original sentence structure. Choice D changes the tense to present progressive, which does not match the past tense context of the sentence.

Correct Answer: C

Rationale: Option C is the best revision as it provides clarity and context to the sentence. It conveys the idea that the individuals rejoiced after successfully finding a creative solution to a persistent technological issue. Choice A is incorrect as it leaves the sentence unchanged without adding any context. Choice B introduces the phrase 'nagging technology problem,' which alters the original meaning and is not as concise as the correct answer. Choice D alters the sentence structure and does not effectively convey the intended meaning of rejoicing after finding a solution.

Correct Answer: D

Rationale: 'As a result' correctly introduces the cause-and-effect relationship in the sentence. In this context, 'As a result' signifies that Fred Hampton's desire for lasting social change through nonviolent means and community recognition led to a specific outcome or consequence. The other choices, 'Unfortunately,' 'Finally,' and 'NO CHANGE,' do not fit the context as they do not convey the cause-and-effect relationship intended in the sentence.