Question

3 multiple choice 1 point what happens during a supernova? hydrogen protons fuse. material from a high - mass star explodes. atomic protons join or fuse to make a heavier chemical element. new elements are created in stars through nuclear fusion reactions.

Explanation:

A supernova is an explosive death - event of a high - mass star. During a supernova, material from a high - mass star explodes. Hydrogen protons fusing is related to normal stellar fusion (not specifically supernova). Atomic protons joining to make heavier elements occurs in general stellar nucleosynthesis and not the main description of what a supernova is. New elements being created in stars through nuclear fusion is a general statement about stellar processes and not the defining characteristic of a supernova.

Answer:

Material from a high - mass star explodes.