Explanation: The four largest planets in the solar system, in descending order of size (by diameter), are:
1. Jupiter – Largest planet (diameter: 139,820 km)
2. Saturn – Second-largest (diameter: 116,460 km)
3. Uranus – Third-largest (diameter: 50,724 km)
4. Neptune – Fourth-largest (diameter: 49,244 km)
Other Options Explained:
(B) Saturn, Jupiter, Uranus, Neptune – Incorrect order (Jupiter is larger than Saturn).
(C) Jupiter, Uranus, Saturn, Neptune – Incorrect order (Saturn is larger than Uranus).
(D) Uranus, Neptune, Saturn, Neptune – Incorrect and repetitive.
Thus, the correct answer is (A) Jupiter, Saturn, Uranus, Neptune.
Explanation by: Mr. Dubey
1. Jupiter – Largest planet (diameter: 139,820 km)
2. Saturn – Second-largest (diameter: 116,460 km)
3. Uranus – Third-largest (diameter: 50,724 km)
4. Neptune – Fourth-largest (diameter: 49,244 km)
Other Options Explained:
(B) Saturn, Jupiter, Uranus, Neptune – Incorrect order (Jupiter is larger than Saturn).
(C) Jupiter, Uranus, Saturn, Neptune – Incorrect order (Saturn is larger than Uranus).
(D) Uranus, Neptune, Saturn, Neptune – Incorrect and repetitive.
Thus, the correct answer is (A) Jupiter, Saturn, Uranus, Neptune.