Multiple choice

Because the statistical review covered only the last few years, and therefore the reviewers were unable to determine the extent to possible earlier violations.

  1. and therefore the reviewers were unable to determine the extent to possible

  2. so therefore the reviewers were not capable of determining the possible extent of

  3. therefore the reviewers were unable to determine the possible extent of

  4. the reviewers were not capable of determining the possible extent of

  5. the reviewers were unable to determine the extent of possible
Reveal answer Fill a bubble to check yourself
E Correct answer
Explanation

The sentence starts with ‘because’ so any construct using ‘therefore’ is not correct. This makes options (1), (2) and (3) incorrect. Option (4) by using ‘capable’ in place of ‘unable’ changes the meaning of the sentence. Hence (5).

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