The composition of the sun is best described as-

75 percent of hydrogen, and 25 percent of helium.

Explanation:

The Sun is mostly composed of helium (He) and hydrogen (H). It is a big ball of gases that are converting into solar energy in the core of the Sun.

The Sun is the biggest star, composed of hot gases and it is located in the center of the solar system.

The temperature of the Sun is 5.726 degrees of Celsius. The percentage of hydrogen in the un is 75 percent, and helium 25 percent.