Question

shorter revolutions; neptune; both; outer planets

Explanation:

The outer planets (Jupiter, Saturn, Uranus, Neptune) are far from the Sun. Neptune is an outer planet. The revolution period (time to orbit the Sun) of outer planets is long, but the question here is about "shorter revolutions" – however, among the options, "Outer planets" is the group that Neptune belongs to, and the other options: Neptune alone is an outer planet, "Both" is incorrect as inner planets have shorter revolutions but outer planets don't have shorter revolutions compared to inner, but the option "Outer planets" is the correct group for Neptune (even though the "shorter revolutions" part might be a bit confusing, but the options given: Neptune is an outer planet, so the group is Outer planets).

Answer:

C. Outer planets (assuming the options are labeled as A. Neptune, B. Both, C. Outer planets; if the labels are different, adjust accordingly, but based on the options shown: the third option "Outer planets" is the correct choice as Neptune is an outer planet and the group is Outer planets)