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?
Choose 1 answer:
Choose 1 answer:
(Choice A) Before quenching, a starburst galaxy will form stars at a rapid rate.
A
Before quenching, a starburst galaxy will form stars at a rapid rate.
(Choice B) When it becomes quenched, a starburst galaxy enters the poststarburst phase.
B
When it becomes quenched, a starburst galaxy enters the poststarburst phase.
(Choice C) Having entered the poststarburst phase, a quenched galaxy is one that no longer forms stars.
C
Having entered the poststarburst phase, a quenched galaxy is one that no longer forms stars.
(Choice D) A starburst galaxy will lose star-forming gas and eventually become quenched.
D
A starburst galaxy will lose star-forming gas and eventually become quenched.
1 answer
C
Having entered the poststarburst phase, a quenched galaxy is one that no longer forms stars.