The ________the concentration of HIV in semen or genital fluids, the more likely it is that HIV will be transmitted to a sex partner.

A. Lower

B. Weaker

C. Higher

D. All of the above

C: Higher

HIV kills or damages the body's ________.

C. Higher

Explanation: The higher the concentration of HIV in semen or genital fluids, the more likely it is that HIV will be transmitted to a sex partner. This means that the virus is more abundant in these fluids, making it easier for transmission to occur. This answer can be determined by understanding the basic concept of how HIV is transmitted and the role of the viral load in increasing the risk of transmission. The viral load refers to the amount of HIV present in a person's blood or other bodily fluids, and it is typically highest in semen or genital fluids.