Who has the authority to approve for return to service a powerplant and propeller or any part thereof after a 100 hour inspection

A mechanic with a powerplant rating.

Explanation:

A mechanic with a powerplant rating has the authority to approve for return to service a powerplant and propeller or any part thereof after a 100 hour inspection.

100-hour inspection which is typically required by the Federal Aviation Regulations can be performed by the mechanic that has powerplant rating since they are certified.

hi there, i would say your answer is:

b. there is a fixed quantity of resources and technology available.

hope that : )