Final answer:
The statement is true; Saturn has both the most visually stunning ring system and the lowest density of all planets, which is less than the density of water.
Step-by-step explanation:
The statement that Saturn has the most spectacular ring system in the Solar System and also has the lowest density of all the planets is True. Saturn's ring system consists of countless icy particles that create several broad, flat rings, known for their intricate fine structure. With a mass 95 times that of Earth, Saturn's average density is notably low at only 0.7 g/cm³. This is less than the density of water, suggesting that Saturn would hypothetically be buoyant enough to float if placed in a vast enough body of water. Moreover, Saturn's rings are distinguishable and exceptionally beautiful, easily the most visually striking among the giant planets, with the B Ring being the brightest and the most densely packed with particles.