If it's just a random thesis:
Topic: Dog Fights
Thesis: Dog fights should be illegal, since they are a cruel way to abuse dogs for profit.
Opposing Thesis: Dog fights are entartaining, and should be continued.
Answer:
B...? It could be A but my bet is on B.
Explanation:
<span>B)It makes the imagined addressee feel more present to the reader. :)</span>