Correct Answer - Option 3 : Maybe
According to the question, if the mobile phone is turned on and if someone cries then the rotator rotates. It is not given that the rotator rotates only when someone cries.
Thus, if the mobile phone is on and the rotator is rotating then it is possible that someone is crying. There maybe other possibilities as well.
Hence, if the rotator is rotating then it is possible that someone maybe crying.