Choice A rationale:

This choice is incorrect. Routine screening and testing for STIs fall under primary prevention, aiming to prevent the initial occurrence of infections.

Choice B rationale:

This choice is incorrect. Providing wound care and comfort measures is a component of secondary prevention, focusing on early detection and treatment of existing infections.

Choice C rationale:

This choice is incorrect. Vaccination against hepatitis B and human papillomavirus is a form of primary prevention, reducing the risk of acquiring these specific infections.

Choice D rationale:

This choice is correct. Tertiary prevention involves managing chronic conditions that result from STIs, such as HIV/AIDS, to improve quality of life and prevent complications.