Final answer:
The block will move to the right due to the net force being 14N in that direction, calculated by subtracting the 12N force to the left from the 26N force to the right.
Step-by-step explanation:
When a force is applied to an object, it will accelerate in the direction of the net force. If the force to the right is 26N and the force to the left is 12N, you can determine the net force by subtracting the smaller force from the larger one. The net force is therefore 26N - 12N = 14N to the right. Since the net force is to the right, the block will move to the right.