Question

the forces of gravity and inertia together are responsible for
a. eclipses.
b. phases.
c. tides.
d. orbits.

Explanation:

Gravity pulls objects towards each other, and inertia is the tendency of an object to resist a change in its motion. Together, they keep celestial bodies in orbits. For example, the Sun's gravity pulls on planets, and the planets' inertia keeps them moving forward, resulting in orbital motion. Eclipses are due to the alignment of celestial bodies, phases are related to the position of the Moon relative to the Earth - Sun system, and tides are mainly caused by the gravitational pull of the Moon and Sun on Earth's water.

Answer:

D. orbits