Which planets have moons?
a) earth only
b)Gas planets only
c) Terrestrial only
d)Both Terrestrial and Gas planets

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