When a star many times more massive than our Sun runs out of fuel, its core collapses under its own gravity. This collapse triggers a violent explosion known as a supernova, which can briefly outshine an entire galaxy. The explosion scatters heavy elements across space, where they eventually form new stars and planets.
Which choice best describes the structure of the text?
- Acheck_circle
It describes a chain of cause-and-effect events.
- B
It defines a term and gives a counterexample.
- C
It presents a problem and a proposed solution.
- D
It compares two types of stellar explosions.
Explanation
The text traces a causal chain: fuel runs out → core collapses → supernova → element dispersal → new stars. B is correct.