Which is the most important step that the nurse can take to prevent the transmission of microorganisms in the hospital?

Choice A reason: Gloves reduce transmission but are not sufficient alone; improper use can spread microbes. Hand washing before and after patient contact is the most effective, universal method, so this is incorrect. Choice B reason: Hand washing before and after patient contact is the most critical step to prevent microorganism transmission, as it removes pathogens from hands, the primary vector. This is the gold standard, making it correct. Choice C reason: Cleaning the stethoscope is important but secondary to hand washing, which addresses the most common transmission route. Hands contact patients directly, so this is incorrect as the most important step. Choice D reason: Protective eyewear prevents specific exposures but doesn’t address general microbial spread. Hand washing is the most effective, routine prevention method, so this is incorrect for the primary step.