In sentence 8 (reproduced below), the writer wants to limit the scope of the claim expressed in the sentence so that it is consistent with the main argument of the passage. The problem with most probiotic supplements is that no significant clinical trials have proven that they offer demonstrable snefits to the general public.
Which of the following changes to sentence 8 best accomplishes this goal?
Changing "problemto "issue"
B
Adding "clearly" before "significant"
С
Changing "proven that they" to "been confirmed to"
D
Adding "that can be observed clearly" after "benefits"
E
Changing the general public to people without gastrointestinal disorders"