Question

mrsa is most likely to be problematic if found
○ in the bloodstream.
○ on the surface of the skin.
○ in nasal passages.
○ on the fingernails.
○ the presence of mrsa in any of those locations indicates a serious infection.

Explanation:

MRSA (Methicillin-resistant Staphylococcus aureus) can colonize skin/nasal passages without causing infection, but bloodstream presence leads to systemic infection (sepsis), which is life-threatening. Other locations are often colonization, not severe infection.

Answer:

A. in the bloodstream.