Which Universe term is correctly associated with scientific fact: “sunlight reaches Earth in about 8 minutes 20 seconds”, and also with “a G-type main-sequence star”?

Correct Answer: Option D — Sun. Sun is correct because it is sunlight reaches Earth in about 8 minutes 20 seconds. It is also associated with a G-type main-sequence star. Together, these two facts identify Sun precisely within Universe. Why the other options are incorrect: Option A — Sirius: Sirius is it is about 8.6 light-years from Earth. It is also associated with a binary star system, so these facts identify Sirius rather than Sun. Option B — Proxima Centauri: Proxima Centauri is it is about 4.24 light-years away. It is also associated with a red dwarf star, so these facts identify Proxima Centauri rather than Sun. Option C — Polaris: Polaris is it lies close to the north celestial pole. It is also associated with a Cepheid variable star, so these facts identify Polaris rather than Sun. Exam Takeaway: Link Sun with “sunlight reaches Earth in about 8 minutes 20 seconds” and “a G-type main-sequence star” for quick revision.