Which group is at the highest risk for developing STIs?

• A. Teenagers 13-19
• B. Adults 25-34
• C. Young adults 20-24
• D. Older adults 65+

Answer: (C)

Risk for sexually transmitted infections rises with higher exposure—more sexual partners, more new sexual relationships, and often inconsistent use of protection. Among the age groups listed, those in their early twenties typically have the highest exposure and the highest reported incidence of many STIs, so they’re most at risk. This age range combines substantial sexual activity with still-developing habits around protection and screening, leading to greater likelihood of acquiring and transmitting infections. Teenagers do have elevated risk, but data often show the peak in the early twenties; older adults tend to have lower risk due to more stable partnerships and fewer new exposures. Regular safe-sex practices and routine screening help reduce risk in this group.