Concept:Fluid pressure at rest follows Pascal's law, which states that pressure is transmitted equally in all directions throughout the fluid.
Explanation:In a fluid at rest, the particles are in equilibrium and exert force on each other uniformly.
This means the pressure at any point inside the fluid is the same in every direction — upward, downward, sideways.
Only in a static fluid does pressure act perpendicular to any surface, but the magnitude of pressure does not depend on direction.
Thus, the pressure is not limited to a single direction like vertical or downward; it acts in all possible directions.
For example, a submerged object experiences force from all sides equally at a given depth.
Answer:The pressure in a fluid that is at rest acts in all directions. (Option A)
