Question

The inner planets are called terrestrial because they

Answer 1

That would be answer B

Answer 2

The answer is B: are small and highly dense.

Actually, the main reason why the inner planets are called terrestrial is because they are Earth-Like and have solid surfaces, and are made up of silicate rocks or metals. They are also very much smaller and the atmosphere is highly dense. Terrestrial planets have a solid planetary surface and have molten heavy metal core and topological features like volcanoes, valleys , and craters.