Final answer:
Purulent exudates usually contain leukocytes, bacteria, and cell debris. Pus is a response of the immune system to combat infection and is typically found in infected wounds or abscesses.
Step-by-step explanation:
Purulent exudates usually contain numerous leukocytes, bacteria, and cell debris (Option C). Pus is a thick, yellowish-white fluid that forms at the site of an infection due to the accumulation of dead neutrophils, tissue fluid, and other cellular remnants. It is a response of the immune system to combat infection and is typically found in infected wounds or abscesses.