In the above figure, the arrows indicate the direction of forces F1 and F2 and the magnitudes of the respective forces are given above the arrows.
Towards which direction will the block move?
Since the forces are unequal, they are unbalanced. Unbalanced forces cause motion.
The direction of motion is in the direction of the greater force. In this case, F1 is the greater force, so the body will move in the direction of F1 force.
Thus, option A is correct.