Question

can the displacement of a moving body is zero or not

Answer 1

Yes , the displacement of a moving body can be 0 if the body started moving from pont A and stopped at point A itself.

Hope this helps

Answer 2

yes the displacement of a moving body can be zero but only when the initial position and the final position of body is one and the same .
for example you ride a bicycle starting from point A and then after two rounds come back again at point A then your displacement is considered as zero