Answer:
yeo whats the answer im pretty sure im in your class
Explanation:
The correct answer is B. The students did the experiment in the lab on Wednesday.
All other possible answers keep it in the passive form, only B is active.
Answer:
B the fox had a beautiful fluffy tale
I believe that it is B, because the term vivisection isn't commonly used amongst society, or what we consider is the "normal" type of topic to talk about. The answer be clarifies what exactly the type of testing is, which is medical.