While researching a topic, a student has taken the following notes:
The student wants to explain what a quenched galaxy is. Which choice most effectively uses relevant information from the notes to accomplish this goal?
Before quenching, a starburst galaxy will form stars at a rapid rate.
When it becomes quenched, a starburst galaxy enters the poststarburst phase.
Having entered the poststarburst phase, a quenched galaxy is one that no longer forms stars.
A starburst galaxy will lose star-forming gas and eventually become quenched.
Choice C is the best answer. This choice defines a quenched galaxy as “one that no longer forms stars.”
Choice A is incorrect. This choice only describes what happens before quenching. Choice B is incorrect. This choice only describes what happens after quenching. Choice D is incorrect. This choice only describes what causes quenching.