Which one of the following choices is not a good question to consider prior to buying a supplement? a. is the quantity enough to have an effect? b. is the product new to me? c. who is selling the product? d. all of the above are good questions.

D. all of the Which one of the following choices is not a good question to consider prior to buying a supplement? A. Is the quantity enough to have an effect? B. Is the product new to me? C. Who is selling the product? D. All of the above are good questions.above

i would choose D

i think the answer is d.