Question

1. which type of nucleosynthesis produces massive amounts of hydrogen and helium atoms?

dematerialization nucleosynthesis
cosmic ray spallation
big bang nucleosynthesis
supernova nucleosynthesis

Explanation:

Big - bang nucleosynthesis occurred in the early universe and produced vast amounts of hydrogen and helium. Dematerialization nucleosynthesis is not a standard process for this; cosmic - ray spallation mainly changes existing nuclei; supernova nucleosynthesis produces heavier elements rather than large amounts of hydrogen and helium.

Answer:

C. big bang nucleosynthesis