c.No sustained current is induced in the loop.
d.Charge separation occurs in the loop, with the top edge positive.
Step-by-step explanation:
According to the lenz law the current induced in the circuit due to change or a motion in magnetic field is directed such as the it always opposes the change in the flux that by exerting a magnetic force in opposing direction.
The current in opposite sides are opposite in nature thus cancelling each other. So, sustained current, in the loop.