Question

PLEASE HELP!!!!

An individual was exposed to a contagious disease but did not become infected. The agent was unable to enter the body and grow because it was stopped by the person's skin. This is an example of how a __________ can prevent disease.
A.
chemical barrier
B.
physical barrier
C.
protective behavior
D.
medication

Answer 1

B. physical barrier.

Answer 2

The answer is option B.



The skin is a physical barrier, and as it, it plays an important role in order to prevent the entrance of microbia to the body. For this reason, there is a very little percentage of microorganisms that achieve to enter in our body, generally by food, mosquito bites, or injections.