Respuesta :
Arrow at the left side pointing towards right side represents the frictional force as it always acts opposite to motion
Answer: the left arrow
Explanation:
Friction is a force that opposes the motion of an object. Friction is due to the contact between the surface of the object in motion and the surface on which the object is moving, and its direction is always opposite to the direction of motion of the object.
In this problem, we see that the object is moving towards the left: therefore, the friction must act towards the right, as shown by the left arrow.