Question

saturn and jupiter are actually pretty close to each other in __, but saturn has __. speed of orbit; much longer \days\ mass; higher gravity size; much less density number of rings; twice as many moons

Explanation:

Jupiter and Saturn are similar in size (both gas giants with diameters in the tens of thousands of kilometers), but Saturn has the lowest density of all planets—less than water. The other options are incorrect: Jupiter has higher mass/gravity, shorter days, and more moons than Saturn.

Answer:

size, much less density