I believe it's B: To persuade his audience to trust him.
Answer:
AIDS is a communicable disease that causes the destruction of the immune system and when left untreated can cause death. The AIDS epidemic began in the 1980s and caused millions of deaths around the world, especially in the 1980s and 1990s, when there was no effective mechanism to combat AIDS. That has changed in this century, as there are now effective treatments that can prolong the life of a seropositive for the average normal period of the population. However, around the world many people still die from not having adequate access to treatment. Finally, it is noteworthy that the HIV-positive community suffers a lot of prejudice and discrimination, which must be combated through awareness campaigns.
Explanation:
First, I will ask her again if she understood what I said because there may be a language barrier between us. She may have misunderstood, which is why she held her hand out expecting money. If she says she understood what I was asking, I will ask her how much money she wants for the photo and base my final decision on that.