Question

when the sun reaches the end of its life cycle, the expanded part will be released into space, forming a ____. a. brown dwarf b. red giant c. planetary nebula d. white dwarf

Explanation:

When the sun reaches the end of its life - cycle, it will shed its outer layers into space. These layers form a planetary nebula. A brown dwarf is a sub - stellar object that never became a star. A red giant is a stage in the sun's life before it sheds its outer layers. A white dwarf is the core that remains after the outer layers are shed.

Answer:

C. planetary nebula