Question

the single most important way to prevent the spread of infection is to: possible answers: a) wear clean outer garments b) wash hands after using the washroom c) smoke tobacco while preparing food d) wearing a hat to confine hair

Explanation:

Handwashing is a core infection control measure. Using the washroom exposes hands to pathogens, so washing them removes these, directly preventing their spread to others or surfaces. Other options are either irrelevant (C is harmful) or less impactful than proper hand hygiene.

Answer:

B) Wash hands after using the washroom