Question

What is the sun's interior composed of?

Answer 1

Sun is in the state of plasma. The fourth state of matter.

Explanation:

Contents of Sun:

Hydrogen (`H_2`): `73.46%`
Helium (`He`): `24.85%`
Oxygen (`O_2`): `0.77%`
Carbon (`C`): `0.29%`

The fusion takes place in the interior core. See image.