While researching a topic, a student has taken the following notes:
* Stars form in a galaxy when gravity causes a massive cloud of dust and gas to collapse.
* A galaxy in a phase of rapid star formation is called a starburst galaxy.
* Quenching is a process in which a galaxy loses star-forming gas.
* A galaxy that no longer forms stars is called a quenched galaxy.
* A quenched galaxy has entered the poststarburst phase.
The student wants to explain what a quenched galaxy is. Which choice most effectively uses relevant information from the notes to accomplish this goal?
Difficulty: Hard
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