Which Universe term is correctly associated with classification or identity: “a red supergiant star”, and also with “located in the constellation Orion”?
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Correct Answer: Option A — Betelgeuse. Betelgeuse is correct because it is a red supergiant star. It is also associated with located in the constellation Orion. Together, these two facts identify Betelgeuse precisely within Universe. Why the other options are incorrect: Option B — Crab Nebula: Crab Nebula is a supernova remnant. It is also associated with located in the constellation Taurus, so these facts identify Crab Nebula rather than Betelgeuse. Option C — Black hole: Black hole is a region where escape velocity exceeds the speed of light. It is also associated with often formed from the collapse of a massive star, so these facts identify Black hole rather than Betelgeuse. Option D — Light-year: Light-year is a unit of distance. It is also associated with used for distances between stars and galaxies, so these facts identify Light-year rather than Betelgeuse. Exam Takeaway: Link Betelgeuse with “a red supergiant star” and “located in the constellation Orion” for quick revision.