Answer:
2.0 m/sec^2
Explanation:
I don't see a block, but will assume the force is oriented in a horizonal direction and there is no friction.
F = ma
1 Newton is 1 kg*m*s^2
4.0 kg*m*s^2 = (2.0kg)(a)
2.0 m/sec^2
The options don't match, so I will assume the force is not parallel to the block. Since all off the options are higher than 2.0 m/sec^2, it appears that the block is moving downward, and the force of gravity needs to be considered, and added. The two vectors are the 4.0N force (at an angle) and the force of gravity (directed down). The resultant vector, the combination of these two forces, will provide the correct answer.