Final answer:
Parenteral exposure refers to the entry of pathogens into the body through a breach in the skin or mucous membranes. Inhaling respiratory droplets is not an example of parenteral exposure.
Step-by-step explanation:
Parenteral exposure refers to the entry of pathogens into the body through a breach in the skin or mucous membranes. A. Splashing patient serum into your eye while vortexing, C. Getting stuck with a butterfly needle, and D. Scratching a skin rash with contaminated gloves are all examples of parenteral exposure. The only option that is not an example of parenteral exposure is B. Inhaling M. tuberculosis when an infected patient coughs, as it involves the inhalation of respiratory droplets rather than direct entry through the skin or mucous membranes.