Why (except for its spectacular rings) does Saturn appear relatively featureless compared to Jupiter?
(a) Saturn rotates more slowly than does Jupiter, and its circulation pattern is not stretched around the planet as on Jupiter.
(b) Saturn is farther from the Sun, and it does not receive enough heat from the Sun to create major circulation patterns.
(c) Saturn's atmosphere is clear, and we are seeing the top of the featureless liquid hydrogen ocean.
(d) Saturn has belts, zones, and storms similar to those of Jupiter, but they are obscured by haze in the upper atmosphere.