Final answer:
The risk of contracting HIV, Hepatitis B, and syphilis increases with unprotected sexual activity. All these bloodborne pathogens, represented by option D) All of the above, can be transmitted through sexual contact and can have serious health consequences if untreated.
Step-by-step explanation:
Unprotected sexual activity can put an individual at risk for several bloodborne pathogens, including HIV, Hepatitis B, and syphilis. Therefore, the correct answer to the question of which bloodborne pathogens one can be at risk for through unprotected sex is D) All of the above.
HIV (human immunodeficiency virus) can result in AIDS (acquired immunodeficiency syndrome) if left untreated. Hepatitis B is another serious infection of the liver that can be prevented to some extent by vaccination and proper precautions. Similarly, syphilis is a bacterial infection that can have serious or even fatal complications if not treated appropriately. While some sexually transmitted infections (STIs) can be prevented with vaccines, like HPV, others require practices such as the use of condoms or complete abstention from sexual activity to reduce the risk of transmission.