In linear motion, which of the following is a measure of inertia?

 Inertia is not a physical quantity; it is simply a property of the body that depends on its mass. There are no units or dimensions for inertia.

Momentum, as we know, is a function of mass and velocity, and it is defined as the product of the body's mass and velocity. 

Nothing exists as a result of mass and displacement. 

The rate of change of velocity with respect to time is called acceleration. We know that we can use mass of mesuring inertia. As a result, option 4 is correct.