3. material safety data sheets contain information on pel.
what is pel?
a. permissible exposure limit to a chemical
ob. potential explosive level of a chemical
c. protective equipment laws applied to a chemical
od. none of these

 I would say it is the first one b/c...

The permissible exposure limit is a legal limit in the United States for exposure of an employee to a chemical substance or physical agent such as high level noise. Permissible exposure limits are established by the Occupational Safety and Health Administration.

Explanation:

answer:

can you answer my question?

explanation: