Answer:
The correct answer is c. Motion.
Step-by-step explanation:
Kinetic energy refers to the energy possessed by an object due to its motion. When an object is in motion, it has the potential to do work or cause a change. The faster an object moves or the greater its mass, the more kinetic energy it possesses.
For example, imagine a ball rolling down a hill. As the ball moves, it gains kinetic energy. When it collides with another object, it can transfer some of its kinetic energy to that object, causing it to move or change its state.
Gravitational energy (a) refers to the energy associated with an object's position in a gravitational field, such as the potential energy of an object raised to a certain height. Mass (b) refers to the amount of matter in an object and is not specifically related to kinetic energy. Wind (d) energy refers to the energy harnessed from the motion of air currents, but it is not the specific type of energy commonly referred to as kinetic energy.
Therefore, the type of energy commonly referred to as kinetic energy is motion (c).