A raft floats at rest on water at Earth's surface. Water exerts an upward force on the raft, and Earth exerts a downward gravitational force on the raft.
Which force forms an interaction pair with the downward gravitational force on the raft?
The downward gravitational force exerted by Earth on the water.
The upward force exerted by the water on the raft.
The downward force exerted by the raft on the water.
The upward gravitational force exerted by the raft on Earth.