Which version of the sentence is correct grammatically?

Correct Answer: A

Rationale: The correct sentence is: 'I had seen her before, but yesterday was the first time I saw her indoors.' In this sentence, the correct past participle form of 'see' is used, which is 'seen' in the past perfect tense ('I had seen') and 'saw' in the simple past tense ('I saw'). Choices B, C, and D contain incorrect past participle and past tense forms of the verb 'see,' making them grammatically incorrect. Choice A is the only option that uses the correct past participle 'seen' and the correct simple past tense 'saw.' Therefore, it is the grammatically correct version of the sentence.

Correct Answer: A

Rationale: The word 'perturbed' in the sentence conveys a sense of being troubled, disturbed, or bothered by something. Therefore, the most suitable substitution is 'bothered by.' Option A correctly captures the feeling of being unsettled due to the loud noise. Choice B, 'excited about,' does not align with the negative connotation of 'perturbed.' Choice C, 'occupied exclusively with,' introduces a different concept unrelated to feeling troubled by the noise. Choice D, 'confused by,' does not accurately reflect the feeling of being troubled or bothered by the situation described in the sentence. Thus, 'bothered by' is the most appropriate substitution in this context.

Correct Answer: B

Rationale: Option B provides a clear and grammatically correct explanation for why the majority of survivors came from first class - they were able to reach the deck fastest to get a seat on a lifeboat. The phrase 'Because of this' properly introduces the reason that follows. In Option A, a comma after 'Because' is unnecessary and disrupts the flow of the sentence. In Option C, 'Because this' is incomplete and lacks proper connection to the subsequent clause. Option D, similar to Option C, lacks clarity due to the absence of a full linking phrase. Therefore, Option B is the best choice as it conveys the explanation effectively and without grammatical errors.

Correct Answer: D

Rationale: The prefix 'aero' is derived from the Greek word 'aēr,' which means air. In words like 'aerobics' and 'aeronautics,' the prefix 'aero' refers to air-related activities or concepts. Therefore, 'air' is the correct meaning of the prefix 'aero.' Choices A, B, and C are incorrect. 'Light' does not relate to the prefix 'aero,' 'speed' and 'distance' are not associated with the concept of air as in 'aero,' making them incorrect answers.

Correct Answer: A

Rationale: 'Egregious' means outstandingly bad or shocking. Among the given choices, 'thoughtless' is the best substitution that captures a similar meaning. This is because 'thoughtless' implies actions or errors committed without careful consideration, which aligns with the negative connotation of the word 'egregious' in the sentence. 'Bizarre' (choice B) means strange or unusual, not necessarily bad. 'Minor' (choice C) means of lesser importance or seriousness, which contrasts with the strong negativity of 'egregious.' 'Flagrant' (choice D) means obviously offensive or bad, but it does not fully capture the sense of shock and outstandingly bad conveyed by 'egregious.'