Practicing good personal hygiene, such as keeping your nails clean and trimmed, will reduce the risk of:

practicing good personal hygiene will reduce the risk of getting infected, and getting a disease.   dirt, germs and parasites can accumulate under the nails, so is important to keep your nails clean and trimmed.

a. the scene is structured as a dialogue between two characters in their own informal language.

the answer is academic paper

and the second should be college professor