Question

multiple-choice question
what particle is the sun mostly composed of?
hydrogen ions
hydrogen protons
helium protons
rewatch

Explanation:

The Sun is mainly composed of hydrogen (about 73% by mass) and helium (about 25% by mass). In the Sun's core, hydrogen undergoes nuclear fusion. Hydrogen ions (protons, since a hydrogen ion with no electrons is a proton) are the primary particles involved in the fusion process and make up the majority of the Sun's composition. Hydrogen protons is not a standard term; the correct particle is hydrogen ions (protons).

Answer:

Hydrogen ions