A carrier is someone whoA. intentionally and maliciously violates contamination standards. B. calls in sick to work due to an upper respiratory illness. C. transmits a pathogen to others without ever getting sick. D. models correct behavior for food handlers.

Option c

Explanation:

A carrier in biology is referred to as someone who is able to pass on a pathogen or maybe a disease to others and does not get sick or get affected. A-symptomatic carriers, although they may be unaffected by the pathogen, they can still transfer the pathogen to others. A-symptomatic carriers can be observed in people infected with influenzas, tuberculosis, and HIV.

C. transmits a pathogen to others without ever getting sick

Explanation:

A disease carrier is an individual who is most times asymptomatic (show no sign or symptom) of a particular disease but has the potential to transmit to other people. A carrier is a person who is infected with a pathogen, but show no sign of the disease caused by the pathogen, because such individual is not affected by the pathogen, such person can be unaware and transmit to others; and on some occasions, they can show symptoms much later.

For example, some people are carriers of herpes virus, but show no symptoms and can transmit to others.