I believe the correct answer is kinetic energy.
We know that kinetic energy is the movement of any object, no matter its size.
Mechanical energy is a type of kinetic energy, which involves the movement of larger objects.
I hope I helped!
If you need a more thorough explanation, don't hesitate to message me or leave a comment down below.
Here's a video that explains energy:
https://www.khanacademy.org/science/physics/work-and-energy/work-and-energy-tutorial/v/work-and-energy-part-2?modal=1
