Kendra watch is a television commercial for a new alternative medicine she is interested in the medicine but she is unsure if it really works which of the following will give reliable evidence of the medicines properties

I believe you are correct.

A and C are not always reliable a they could pay these people to do a testimonial

It is definitely not B; Just because they have an expensive research facility does not mean that their research is amazing.

The one you have chosen makes the most sense as it provides people with scientific results to show them that the drug actually works