The poles of this planet face the sun for longer periods of time than any other planet.

Uranus is the planet whose poles face the sun for longer periods of time than any other planet. It is because due to the extreme tilt of the Uranus from its axis. Also, its period of revolution around the sun is also very high, due to which the poles of Uranus faces sun for extreme long time.

Other planets also have tilt but not as large as in the case of Uranus and also they don’t have revolution period as long as Uranus.

Therefore, correct option is (b) Uranus.