Correct Option: C. Consistent and correct use of condoms during sexual intercourse Detailed Explanation: HIV (Human Immunodeficiency Virus) is primarily transmitted through specific bodily fluids such as blood, semen, vaginal fluids, and breast milk. Understanding how HIV is transmitted is crucial for effective prevention strategies.

1. Understanding Transmission:
2. HIV is not spread through casual contact, such as hugging, shaking hands, or sharing public restrooms. It requires direct exposure to infected bodily fluids.
3. The most common routes of transmission are through unprotected sexual intercourse, sharing needles, and from mother to child during childbirth or breastfeeding.
4. Why Option C is Correct:
5. Consistent and Correct Use of Condoms: Condoms act as a barrier that prevents the exchange of bodily fluids during sexual intercourse. When used correctly and consistently, condoms are highly effective in reducing the risk of HIV transmission. They not only protect against HIV but also other sexually transmitted infections (STIs) and unintended pregnancies.
6. Effectiveness: Studies have shown that consistent condom use can reduce the risk of HIV transmission by up to 85% or more. This makes it one of the most reliable methods for preventing the spread of HIV during sexual activity.
7. Why Other Options are Incorrect or Weaker:
8. Option A: Using public restrooms: This option is incorrect because HIV is not transmitted through surfaces or public facilities. The virus does not survive long outside the human body, and using a public restroom poses no risk of HIV transmission.
9. Option B: Sharing personal items like razors: While sharing razors can pose a risk of transmitting blood-borne infections (including HIV), it is not the most common or effective way to prevent HIV transmission. The risk is significantly lower compared to unprotected sexual intercourse. Moreover, the primary mode of HIV transmission is sexual, making this option less effective than using condoms.
10. Option D: Avoiding all physical contact with HIV-positive individuals: This option is misleading. While it is important to avoid activities that can lead to transmission, such as unprotected sex or sharing needles, avoiding all physical contact is unnecessary and promotes stigma. Many forms of physical contact (like hugging or shaking hands) do not pose any risk of HIV transmission.

Summary of Key Points:

• HIV Transmission: Primarily occurs through sexual intercourse, sharing needles, and from mother to child.
• Condom Effectiveness: Consistent and correct use of condoms significantly reduces the risk of HIV transmission.
• Misconceptions: HIV is not transmitted through casual contact or public facilities.
• Stigma Awareness: Avoiding all contact with HIV-positive individuals is unnecessary and can contribute to stigma.

Revision Summary:

• The most effective way to prevent HIV transmission is through the consistent and correct use of condoms during sexual intercourse.
• HIV is transmitted through specific bodily fluids, not through casual contact or public facilities.
• Sharing personal items like razors poses a risk but is less effective than using condoms.
• Avoiding all physical contact with HIV-positive individuals is unnecessary and promotes stigma.