Final answer:
If gear 1 is rotating clockwise, gears 3 and 4 will also rotate clockwise.
Step-by-step explanation:
In a system of gears, the direction of rotation is determined by the arrangement of the gears. If gear 1 is rotating clockwise, gears 3 and 4 will also rotate clockwise. This is because they are connected in a series, meaning that the rotation of one gear directly affects the rotation of the others.