Which body fluids can transmit HIV?

The correct choice highlights that HIV can be transmitted through blood and certain body fluids. The primary fluids that are known to carry the virus include blood, semen, vaginal fluids, rectal fluids, and breast milk. These fluids contain a sufficient viral load for transmission to occur, particularly through activities that involve direct contact, such as sexual contact or sharing needles.

Blood is the most significant fluid for HIV transmission, as it has the highest concentration of the virus. Other body fluids like semen and vaginal secretions can also transmit the virus during sexual activities. Breast milk is another important mode of transmission primarily from mother to child during breastfeeding.

The other answer choices focus on other types of bodily fluids that do not have sufficient quantities of the virus to pose a risk for transmission. Saliva, tears, urine, and sweat are generally considered non-infectious in the context of HIV, as they do not carry the same risk of transmitting the virus compared to the fluids mentioned in the correct choice.