A student reads the following sentence: 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: C

Rationale: The key context clue essential to decipher the word 'ubiquitous' is the word 'now.' By comparing the rarity of automobiles a hundred years ago to their ubiquity now, the student can infer that 'ubiquitous' means something that is commonplace or found everywhere. Choice A ('Ago') refers to the past and does not provide information about the current state of cars. Choice B ('Cars') only contrasts rare and ubiquitous without indicating the change over time. Choice D ('Rare') simply contrasts with 'ubiquitous' without showing the transition from rarity to ubiquity.

Correct Answer: C

Rationale: The comma after 'glasses' is used incorrectly in the sentence. Commas are not needed to separate the subject from the verb in this context. In this case, the subject 'She' is not separated from the verb 'wore,' making the comma unnecessary. The semicolon after 'book' is appropriate for separating two independent clauses, the comma after 'long' is correctly used for introductory elements, and the period at the end of the sentence is necessary for indicating the end of a complete thought.

Correct Answer: D

Rationale: The correct answer is 'Millennium.' 'Millennium' is spelled correctly, referring to a period of 1000 years. Choice A, 'Miniscool,' and Choice B, 'Miniature,' are misspelled. Choice C, 'Maintenance,' is a commonly misspelled word, but in this case, it is spelled correctly. However, the correct spelling requested in the question is 'Millennium.'

Correct Answer: B

Rationale: The correct answer is B: 'In the rose garden out back.' This is an incomplete sentence because it lacks a subject and a verb. A complete sentence requires both a subject (who or what the sentence is about) and a verb (action or state of being). Choices A, C, and D are complete sentences as they have the necessary components to form a grammatically correct sentence. 'Watch out' has an implied subject (you) and verb (watch), 'I guess that's true' has the subject 'I' and the verb 'guess', and 'It would take about three weeks' has the subject 'It' and the verb phrase 'would take.'

Correct Answer: C

Rationale: Choice C is the correct thesis statement because it presents a clear argument or claim, making it a strong thesis statement. The thesis statement asserts President Perez as the greatest leader based on her proposal of a universal income to eradicate inequity among citizens. This statement sets a specific focus and direction for the essay or discussion that follows. Choices A, B, and D do not function as thesis statements. Choice A provides a descriptive event but lacks a clear argument. Choice B highlights an achievement but does not establish a central claim. Choice D mentions an interview but does not present a focused argument as required in a thesis statement.