Final answer:
Inertial force is the force experienced due to an object's acceleration or deceleration, associated with the concept of inertia as per Newton's first law of motion.
Step-by-step explanation:
The correct definition for an inertial force is (C) The force experienced due to an object's acceleration or deceleration. Inertial forces arise in noninertial (accelerated) frames of reference and are apparent forces that seem to act on mass in an accelerating frame of reference, like the sensation of being pushed back into your seat when a plane takes off. This is due to inertia, the resistance of an object to change its state of motion or rest, as described by Newton's first law of motion.
Inertial Force is the force experienced due to an object's acceleration or deceleration. It is not the force of gravity on an object, the force of resistance against motion, or the force of attraction between two masses.