The Staff Development Nurse at the Hospital Is Teaching Other

Multiple Choice

The staff development nurse at the hospital is teaching other nurses about the infectious process. Which statement by a nurse in the class indicates that this class participant needs further teaching about the concept of commensal microorganisms?

A) "A commensal microorganism is normal flora."
B) "These microorganisms can cause disease if they enter sterile tissues of the body."
C) "A commensal microorganism is always damaging to the host."
D) "A commensal microorganism derives benefits from the host."