Answer:c: having unprotected sex with an infected person.
Step-by-step explanation:
Well. It's kinda obvious not going to lie. Having sex with an uninfected partner wouldn't increase your chances of getting HIV as much as answer c. getting a massage doesn't involve and breast-feeding or sex, stuff like that. Having dinner with a group of infected people wouldn't be a problem, even though saliva can be transferred around, it doesn't carry HIV. C is the best answer. Hope this helps.