Question

Do you think the buoyant force would be greater or smaller if the gold cube were suspended in water? Explain your answer.

Answer 1

You did not give enough information. The answer depends on the conditions before the cube is hung in water. Is it currently in air or some other fluid? Or was it resting on the bottom of a container with water in it?

Answer 2

'Greater' or 'smaller' means whatever the force is right now would change.
In order to figure out how it would change, we would need to know what
the cube is surrounded by right now, before it goes into the water.
What I'm really trying to say is: There's not enough information in
the question for us to be able to answer it.