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Byju's Answer
Standard VIII
Science
Evolution of Stars
What is a pla...
Question

What is a planetary nebula

A
a disk of gas surrounding a protostar that may form into planets
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B
what is left of the planets around a star after a low-mass star has ended its life
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C
the expanding shell of gas that is no longer gravitationally held to the remnant of a low-mass star
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D
the molecular cloud from which protostars form
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Solution

The correct option is C the expanding shell of gas that is no longer gravitationally held to the remnant of a low-mass star
A ring-shaped gaseous structure formed by an expanding shell of gas round an ageing star is known as nebula

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