Which phrase describes the composition of the outer planets?
A. are gaseous
B. contain water
C. have high densities
D. are made mostly of liquid
Answer (2)
The outer planets are primarily gaseous, composed mainly of hydrogen and helium, and lack solid surfaces. Therefore, the best phrase to describe their composition is option A: 'are gaseous.' Other options do not accurately reflect their overall characteristics.
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The outer planets are primarily composed of gases like hydrogen and helium, classifying them as gaseous in nature. They have low densities and lack solid surfaces. Thus, the most accurate description of their composition is that they are gaseous. ;
