Which term describes the collection of bodies including the Sun and all objects that orbit it?

• A. Solar system
• B. Sun
• C. Terminator
• D. Antibiotics

Answer: (A)

Understanding how we name the group of bodies bound by a star’s gravity helps explain why this term fits. The Sun and everything that orbits it—planets, moons, dwarf planets, asteroids, comets, and other smaller objects—together form the solar system. It’s the specific collection defined by gravity linking those bodies to the Sun.

The Sun alone is just the star at the center, not the whole system. The terminator is the line between day and night on a planet, not a group of objects. Antibiotics are medicines used to treat bacterial infections, unrelated to astronomy. So the term that describes the Sun and all objects that orbit it is the solar system.