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Correct Answer: Option D — Milky Way. Milky Way is correct because it is it belongs to the Local Group. It is also associated with a barred spiral galaxy. Together, these two facts identify Milky Way precisely within Universe. Why the other options are incorrect: Option A — Andromeda Galaxy: Andromeda Galaxy is it belongs to the Local Group. It is also associated with a spiral galaxy also catalogued as M31, so these facts identify Andromeda Galaxy rather than Milky Way. Option B — Sun: Sun is sunlight reaches Earth in about 8 minutes 20 seconds. It is also associated with a G-type main-sequence star, so these facts identify Sun rather than Milky Way. Option C — 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 Milky Way. Exam Takeaway: Link Milky Way with “it belongs to the Local Group” and “a barred spiral galaxy” for quick revision.
