What happens to the energy "lost" by a machine?

a. it is recycled by the machine

b. energy is never lost by machines

c. it goes into the environment

The answer would be:

C: It goes into the environment

lose energy from a machine turns into heat.

I would say A, although it depends on what kind of machine. If it does not recycle, then most likely C. I would be able to give more context based on what kind of machine it is.