I need the correct answer of this only not a trash copy for the internet(goggle) answer​

An experiment is designed to test the relationship between the initial height of a basketball before it is dropped to the height of its rebound bounce. the height of the rebound bounce is measured using a scale positioned behind the ball. in the above experiment, which condition would not be controlled? a). the starting height of the ballb). the surface the ball bounces on c). the type of ball d). the method to measure the rebound height of the ball

Aregion of space in which a measurable gravitational force is indicated by the force exerted on a test mass is called

The diagram shows a series of volcanic island and a hot spot determine the direction of movement of the tectonic plate that for the island