Multiple choice

Directions: The sentence below or part thereof has been underlined. The underlined part may have an error of grammar or diction. Select the option that best corrects the error, if any.

Astronomers at the Palomar Observatory have discovered a distant supernova explosion, one that they believe is a type previously unknown to science.

  1. that they believe is

  2. that they believe it to be

  3. they believe that it is of

  4. they believe to be of

  5. they believe is that of
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

option (A) and (B) do not lead to creation of meaningful sentences hence, they can be eliminated directly, option (E) has an incorrect phrasing. Although options (C) and (D) both seem to be correct, but (C) is too verbose, hence (D) is the best option.

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