Question

the same as gravity
a upward pushing force that a fluid pushes on an object
a force that causes an object to sink
a downward pushing force that a fluid pushes on an object
what is buoyant force?

Explanation:

Buoyant force is defined as an upward - acting force exerted by a fluid on an object submerged or floating in it. This is in line with the second option description “A upward pushing force that a fluid pushes on an object”. The first option is incorrect as buoyant force is not the same as gravity. The third option describes a force that causes sinking (which would be related to weight or net downward force when weight > buoyant force), not buoyant force itself. The fourth option is wrong as buoyant force is upward, not downward.

Answer:

A upward pushing force that a fluid pushes on an object.