A nurse is providing information about contraceptives to a couple. Which contraceptive method provides protection against sexually transmitted diseases?

A. Oral contraceptives: Oral contraceptives regulate hormonal cycles to prevent ovulation and pregnancy but do not provide any barrier to infectious agents. They offer no protection against sexually transmitted infections (STIs), including HIV, chlamydia, or gonorrhea. B. Tubal ligation: Tubal ligation is a permanent surgical method that blocks the fallopian tubes to prevent pregnancy. While highly effective for contraception, it does not prevent the transmission of sexually transmitted infections because it does not provide a barrier between partners. C. Male or female condoms: Condoms act as a physical barrier preventing the exchange of bodily fluids during sexual activity, reducing the risk of pregnancy and transmission of STIs. Correct and consistent use significantly lowers exposure to pathogens such as HIV, HPV, chlamydia, and gonorrhea. D. Intrauterine device: IUDs, whether hormonal or copper, provide long-term prevention of pregnancy by affecting implantation or sperm motility. They do not protect against STIs, as they do not prevent contact with infectious secretions during sexual activity.