The correct answer is B. planets; moons.
So the complete sentence would read: "The Sun's gravitational pull keeps the planets in their orbits, just as a planet's gravitational pull keeps its moons in their orbits."
The Sun's gravitational pull keeps the _______ in their orbits, just as a planet's gravitational pull keeps its _______ in their orbits.
A.
stars; moons
B.
planets; moons
C.
planets; stars
D.
moons; stars
1 answer