The three stages in the combustion of gas in an internal combustion engine are combustion, thermal energy, and energy

The correct answer is mechanical energy.

Explanation:

For an internal combustion engine to work you will need to burn fuel. This burning of fuel is called combustion.

It is a chemical process in which mixing oxygen with fuel generates heat for the motor to move .

The oxygen in this process is called oxidant and together with the fuel it will be the one that manages to run the internal combustion engine.

well we can't tell you because we cant see the time give a screen shot or something.

where is the diagram?

if you insert the diagram ill be able to you