Question

can the average speed of a moving body be zero​

Answer 1

Average speed can never be 0 unless the body is stationary over an interval of time.

Answer 2

Answer: no, kinda common sense right?

Explanation: if an object has average speed of 0 it's considered stationery. Even if the moving object is at 0.1 speed (kmph), it won't get an average of zero. And it's common sense that speed can't be a negative number, so average will always be above 0 unless the object is stationery.