A

Step 1: Understand the concept of pseudo force.
A pseudo force, also known as a fictitious force, appears when observing a system from a non-inertial (accelerating) reference frame.
Step 2: When a body is placed on a surface that is accelerating, the body tends to remain in its state of rest or uniform motion due to inertia (as per Newton's first law). However, since the observer is in an accelerating frame, they perceive the body as experiencing a force directed opposite to the direction of acceleration of the surface.
Step 3: For example, if a body is resting on an accelerating train moving forward, from the perspective of an observer inside the train, the body will seem to be pushed backward due to this acceleration.
Conclusion: Hence, the statement that a body experiences a pseudo force if it is kept on something which is accelerating is true.
Therefore, the correct answer is A.