Answer:
Safe sex is sexual activity using methods or devices to reduce the risk of transmitting or acquiring sexually transmitted infections, especially HIV. "Safe sex" is also sometimes referred to as safer sex or protected sex to indicate that some safe sex practices do not completely eliminate STI risks.
Explanation: Pretty much u do things like use condoms when having sex so there is no chance of sperm getting into a woman's vigina and so they don't get any infections like HIV.