Answer:
Which planets have moons?
a) earth only
b)Gas planets only
c) Terrestrial only
d)Both Terrestrial and Gas planets
if you choose options A not Earth only have moon other planet have it too.
if you choose options C is it true that gas planet have moon but the terrestrial planet also have moon
if you choose options C it's wrong because Mercury and Venus doesn't have moon because the planet are too close with the Sun.
you're answer would be D both of terrestrial planet and gas planet have moon.
Hope this helps