Which Universe term is correctly associated with important feature: “it marks one shoulder of Orion”, and also with “it is a variable star nearing a late evolutionary stage”?

Correct Answer: Option C — Betelgeuse. Betelgeuse is correct because it is it marks one shoulder of Orion. It is also associated with it is a variable star nearing a late evolutionary stage. Together, these two facts identify Betelgeuse precisely within Universe. Why the other options are incorrect: Option A — Crab Nebula: Crab Nebula is associated with a supernova observed in 1054 CE. It is also associated with it contains the Crab Pulsar, so these facts identify Crab Nebula rather than Betelgeuse. Option B — Black hole: Black hole is its boundary is called the event horizon. It is also associated with its gravity strongly bends spacetime, so these facts identify Black hole rather than Betelgeuse. Option D — Light-year: Light-year is the distance light travels in one year. It is also associated with approximately 9.46 trillion kilometres, so these facts identify Light-year rather than Betelgeuse. Exam Takeaway: Link Betelgeuse with “it marks one shoulder of Orion” and “it is a variable star nearing a late evolutionary stage” for quick revision.