The Attempt at a Solution
In rolling without slipping, the friction does some work of torque about the axis of rotation. So mechanical energy is not conserved. A) - r),t)
B) and C) - r),t)
D) - One example I can think for the instant centre of rotation is the point of contact of a wheel rolling without slipping on a surface. No other force acts about the point of rotation.
So p),q),s) are the options here.
btw is there any difference between 'rolling' and 'rotating' about instantaneous axis of rotation?
answer for A) is incorrect.