Evidence for Gravity Practice Test

A computer orbital simulation models a planet moving near a star. When the simulation includes gravitational attraction toward the star, the planet follows a repeating, curved (almost elliptical) path and keeps circling the star. When gravity is turned off in the same simulation, the planet moves in a straight line and never returns. Which claim is best supported by these simulation results?

A computer model predicts ocean tides using only the Moon’s gravitational pull and Earth’s rotation. The predicted high-tide times match the measured high-tide times at a coastal city within about 30 minutes for a whole week. What does this agreement best show?