Answer:
The number of forces that are acting on the mouse will be three (Normal force, friction force and force of the mouse´s weight)
Step-by-step explanation:
The number of forces that are acting on the mouse will be three. the first is the normal force acting on the midpoint of the mouse, this force is directed upward, the other is the force between the block and the bottom of the mouse, which is the friction force, and the third is the force of the mouse´s weight, which is defined as the multiplication of mass by gravity.