Which Universe term is correctly associated with scientific fact: “it is a variable star nearing a late evolutionary stage”, and also with “a red supergiant star”?

Correct Answer: Option D — Betelgeuse. Betelgeuse is correct because it is it is a variable star nearing a late evolutionary stage. It is also associated with a red supergiant star. Together, these two facts identify Betelgeuse precisely within Universe. Why the other options are incorrect: Option A — Crab Nebula: Crab Nebula is it contains the Crab Pulsar. It is also associated with a supernova remnant, so these facts identify Crab Nebula rather than Betelgeuse. Option B — Black hole: Black hole is its gravity strongly bends spacetime. It is also associated with a region where escape velocity exceeds the speed of light, so these facts identify Black hole rather than Betelgeuse. Option C — Light-year: Light-year is approximately 9.46 trillion kilometres. It is also associated with a unit of distance, so these facts identify Light-year rather than Betelgeuse. Exam Takeaway: Link Betelgeuse with “it is a variable star nearing a late evolutionary stage” and “a red supergiant star” for quick revision.