Question

how are most sexually transmitted infections (stis) spread? select four options.
□ exchange of bodily fluids
□ skin-to-skin contact
□ holding hands
□ blood-to-blood contact
□ during childbirth

Explanation:

To determine how most STIs spread, we analyze each option:

• "exchange of bodily fluids": Many STIs (e.g., HIV, chlamydia) spread via semen, vaginal fluids, etc. This is correct.
• "skin - to - skin contact": STIs like herpes or HPV can spread through direct skin - to - skin contact during sexual activity. This is correct.
• "holding hands": Holding hands does not involve the transmission routes (bodily fluids, infected skin contact, etc.) of STIs. This is incorrect.
• "blood - to - blood contact": Some STIs (e.g., HIV, hepatitis B) can spread through blood - to - blood contact (like sharing needles). This is correct.
• "during childbirth": A mother with an STI can pass it to her baby during childbirth (e.g., syphilis, HIV). This is correct.

Answer:

A. exchange of bodily fluids, B. skin - to - skin contact, D. blood - to - blood contact, E. during childbirth