Question

Will medal/give brainliest

Answer 1

The thrust is greater because when the swimmer throws his hand back it thrusts him through the water

Answer 2

Here, "Buoyancy" is Greater than the weight, as you can see, the person is swimming (floating), not sinking, so upward force (buoyant force) will be greater than the weight (downward)

In short, Your Answer would be "Buoyancy"

Hope this helps!