Question

the diameter of saturn is almost ten times that of the earth, but its density is much less. this can best be explained by the fact that saturn— a is a gaseous planet. b is farther from the sun. c has a shorter period of rotation. d has a ring around its center.

Explanation:

Gaseous planets have lower density. Saturn is one, explaining its low - density despite large size.

Answer:

A. is a gaseous planet