Which of the following sentences best expresses the essential information in the highlight

ed sentence in the passage？ Incorrect answer choices change the meaning of the sentence in important ways or leave out essential information.

A．Due to the sun's enormous mass, its gravity is strong enough to keep everything in the solar system in orbit around it.

B．The sun is actually an enormous star whose mass is equal to that of the entire solar system including all manner of matter.

C．The sun's gravitational pull is so strong that it extends beyond the edges of the solar system into the Milky Way.

D．The sun is far greater in size than the Earth and it is responsible for the majority of the solar system's mass.