In figure below, a force F is applied in a direction passing through the pivoted point O of the body. Will the body rotate? Give reason to support your answer.

No, the body will not rotate because
Turning effect = Force x perpendicular distance of the force from the pivoted point.
= F x 0 = 0.
Perpendicular distance is 0 or force is parallel to the point of application of force, hence the body will not rotate.