Resident microflora:

a. can be found in the stomach and are adapted to acidic conditions

b. may be responsible for opportunistic infections in immunocompromised

c. may be permanent or transient

Resident microflora b. may be responsible for opportunistic infections in immunocompromised

Explanation:

It is almost impossible to found these microorganisms in the stomach because of the acidic conditions, most of them are not adapted to this type of environment. Resident microflora is not transient, is actually permanent. However, resident microflora may be responsible for ooportunistic infections in immunocompromised and they can also increase the intensity of the disease produced by that pathogen.