Gastrointestinal bacteria in the body .

a. work better in an acidic environment
b. have no relationship to an individual's health status
c. produce small amounts of several vitamins
d. consist of a few species and subspecies
e. are not influenced by diet

c. produce small amounts of several vitamins

Explanation:

Gastrointestinal bacteria in the body consist of a mix of many different kinds of bacteria species that makes up the microbiota of an individual, which is unique and varies from one individual to another. The gastrointestinal bacteria that make up an individual’s microbiota is dependent on the microbiota of the mother, the individual’s environment, as well as the diet of the individual.  

The well being of an individual, according to research, is closely elated to the gastrointestinal bacteria of an individual. Bacteria haven linked to the probable cause of diseases such as colon cancer, obesity.

They do not only also help in digestion, but also produce small amount of several vitamins in the body.

Option C is true while the other ions are not true of gastrointestinal bacteria.

you don't know what is actually on them. they get sprayed with pesticides so what is really in that? people can lie on labels or you just might not understand what is actually in there