Choice A rationale:

The statement "Tetanus can be transmitted from person to person through respiratory secretions" is incorrect. Tetanus is not a communicable disease, and it does not spread from person to person.

Choice B rationale:

The statement "The primary reservoir of

C. tetani is contaminated food and water" is incorrect. Tetanus is primarily found in the environment, especially in soil, as

C. tetani is a bacterium that forms spores in the environment.

Choice C rationale:

The correct statement explains that tetanus spores can persist in the environment and enter the body through a wound. This is accurate as

C. tetani spores can survive for years in soil and dust, and they enter the body through cuts, puncture wounds, or other openings in the skin.

Choice D rationale:

The statement "Vector transmission of tetanus occurs primarily through mosquito bites" is incorrect. Tetanus is not transmitted through mosquito bites. Mosquitoes are not carriers of

C. tetani, and the infection does not spread through their bites.