question 18\na large, bright star whose hot core has used most of its hydrogen is a\no nova.\no…

question 18\na large, bright star whose hot core has used most of its hydrogen is a\no nova.\no supernova.\no giant.\no pulsar.

question 18\na large, bright star whose hot core has used most of its hydrogen is a\no nova.\no supernova.\no giant.\no pulsar.

Answer

Brief Explanations:

A giant star is large and bright, and when its hot - core has used most of its hydrogen, it enters the giant phase. A nova is a sudden brightening of a star due to a thermonuclear explosion on its surface. A supernova is a more energetic explosion marking the end of a massive star's life. A pulsar is a highly magnetized, rotating neutron star that emits beams of electromagnetic radiation.

Answer:

C. giant