Question

multiple choice question
what causes the pressure of a static fluid in a container?
collisions of the atoms or molecules of the fluid
the gravitational force caused by the earth
normal forces caused by the container

Explanation:

The pressure of a static fluid in a container is mainly due to the weight of the fluid above a given point, which is a result of the gravitational force exerted by the Earth on the fluid. Collisions of atoms or molecules are more relevant to the pressure in a gas - like situation in kinetic - theory context. Normal forces from the container act on the fluid's surface but do not cause the internal pressure of the static fluid.

Answer:

The gravitational force caused by the Earth