Which scientific term best matches this description: The Sun and its surrounding matter, including asteroids, comets, planets, and moons, held together by the Sun’s gravitational influence?

A) astronomical unit (au or AU)

B) comet

C) dwarf planet

D) solar system

Answer: D

Explanation: The Sun and its surrounding matter, including asteroids, comets, planets, and moons, held together by the Sun's gravitational influence. Other stars that are known to have planets orbiting them are referred to as other solar systems or planetary systems.