<em>Hi There!!</em>
<em>I think the best answer is </em><em>Clause</em><em>...</em>
<em>Hope This Helps!!</em>

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.
Answer:
the second one
Explanation:
it makes a little bit more sense
B. Who are the main characters in this novel?
It's the only question
Employed , or you have a job