Final answer:
The normal force labeled 'Fnorm' in physics acts perpendicular to the surface an object is resting on. For an object on a horizontal surface, this force is directed vertically upward, in line with choice B and the common convention of assigning upward direction as positive.
Step-by-step explanation:
The force labeled "Fnorm" typically refers to the normal force in physics problems. The normal force is a force exerted by a surface to support the weight of an object placed on it, and it acts perpendicular to the surface. In the context of an object resting on a horizontal surface, such as a floor, the normal force acts vertically upward to balance the weight of the object, which is the force due to gravity acting vertically downward. Therefore, the correct answer for the direction of the force labeled "Fnorm" would be upward, or in the +ŷ direction in a coordinate system where up is considered positive. This response is in line with choice B of the question, which aligns with common physics notation where upward motions or forces are considered positive.