Question

Which of the following is a star that expands due to fusion?

A. black hole
B. galaxy
C. constellation
D. supergiant

Answer 1

D. Supergiant.
A black hole is a point in space that has such a high gravitational pull, it even sucks light from the places around it. A galaxy is a cluster of stars and space debris. A constellation is a pattern found in the stars to make a shape.

Answer 2

A). No. A black hole is super contracted, not expanded.

B). No. A galaxy is a collection of billions and billions of stars.

C). No. A constellation is just some stars that happen to be
near each other in our sky.

D). Yes. A supergiant used to be a normal star but has expanded giantly.