What might a safety hazard include?
a. air contaminants.
b. chemical contaminants.
c. risk of physical injury.
d. all of the above.
e. both b and c

Arecession is the total value of all goods produced in a country in a given year total value of all goods and services produced in a country in a given year total amount of money earned in a nation over a specific period of time none of the answers are correct.