Which Universe term is correctly associated with location or association: “often formed from the collapse of a massive star”, and also with “its boundary is called the event horizon”?

Correct Answer: Option B — Black hole. Black hole is correct because it is often formed from the collapse of a massive star. It is also associated with its boundary is called the event horizon. Together, these two facts identify Black hole precisely within Universe. Why the other options are incorrect: Option A — Light-year: Light-year is used for distances between stars and galaxies. It is also associated with the distance light travels in one year, so these facts identify Light-year rather than Black hole. Option C — Milky Way: Milky Way is the galaxy containing the Solar System. It is also associated with Sagittarius A* lies at its centre, so these facts identify Milky Way rather than Black hole. Option D — Andromeda Galaxy: Andromeda Galaxy is the nearest large galaxy to the Milky Way. It is also associated with it is visible from Earth without a telescope under dark skies, so these facts identify Andromeda Galaxy rather than Black hole. Exam Takeaway: Link Black hole with “often formed from the collapse of a massive star” and “its boundary is called the event horizon” for quick revision.