Question

what are all the inner planets made of?
water
rocky
moons
gas

Explanation:

Inner planets (Mercury, Venus, Earth, Mars) are terrestrial planets. Terrestrial planets are composed mainly of rock and metal, so they are rocky. Water is not the primary component of all inner planets (e.g., Mercury has little water). Moons are satellites, not the material of planets. Gas is the composition of outer gas giants, not inner planets.

Answer:

B. rocky (assuming the options are labeled A: water, B: rocky, C: moons, D: gas)