I'd say is a, since the point of a persuasive essay is to give your opinion backed up by research with proof typically, however due to the wording by saying 'references' I don't believe it's b.
Hoped it helped! c:
- Kat
Sand scatters the beach
waves crash on the sandy shores
blue water shimmers
What do you mean by that?
The answer is Scriptotherapy. Hope I got It right. :P