Multiple choice

Directions: This question presents a sentence, all or part of which is underlined. Beneath the sentence you will find five ways of phrasing the underlined part. The first of these repeats the original; the other four are different. If you think the original is best, choose the first answer; otherwise choose one of the others.

The recent invention of hypersonic aircraft that is expected to reduce travel time from London to Adelaide to less than five hours will hypothetically allow travelers to make two round trips in around 24 hours.

  1. The recent invention of hypersonic aircraft that is expected to reduce travel time from London to Adelaide to less than five hours will hypothetically allow travelers

  2. A recently invented hypersonic aircraft, that is expected to reduce travel time from London to Adelaide to less than five hours, will hypothetically allow travelers

  3. A recently invented hypersonic aircraft, which is expected to reduce travel time from London to Adelaide to less than five hours, will hypothetically allow travelers

  4. The recent invention of hypersonic aircraft, which is expected to reduce travel time from London to Adelaide to less than five hours, will hypothetically allow travelers

  5. A recently invented hypersonic aircraft, which is expected to reduce travel time from London to Adelaide to less than five hours, will allow travelers hypothetically
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Correct. The option correctly uses 'hypersonic aircraft', and not its invention, as the Subject of the sentence. Also, the use of a Non-Restrictive Clause makes the sentence idiomatic and simple.

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