I WILL MARK BRAINLIEST JUST CAN ANYONE PLEASE HELP ME WITH THIS

I WILL MARK BRAINLIEST JUST CAN ANYONE PLEASE HELP ME WITH THIS class=
I WILL MARK BRAINLIEST JUST CAN ANYONE PLEASE HELP ME WITH THIS class=

Answer :

Answer:

The first one is When a machine is used for spare parts for another machine.

Explanation: