What event happens that transitions a star into a red giant?

a. A Supernova explosion
b. Dust and gas begin to compress under the force of
gravity.
c. Star burns all it's hydrogen and fuses helium

a supernova explosion

Explanation:

may be it helps u a lot.

sadness is not good

explanation:

the sun's light combined with the visible wavelenghts form what is called ultraviolet radiation, which are the long waves at the end of a visible light sprectrum.

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