Question

A scientist hypothesizes that Earth's axis changes the angle of its tilt over the course of several thousand years.

Which of the following is the best way for the scientist to test this hypothesis?
A.place a camera on a satellite orbiting Earth and record the Earth's movements
B.make a computer model showing Earth's motion in space
C.place motion sensors at the north and south poles to determine the position of the axis
D.set up a controlled experiment using the other planets in the solar system as experimental groups