The process by which protons are converted into helium atoms with a tremendous release of energy is called?

A. thermionic emission
B. nuclear fission
C. thermonuclear fusion
D. photoelectric emission

Correct Answer:

Option C – thermonuclear fusion

Explanation

Thermionic emission: thermally induced flow of charge
Nuclear fission: nuclear reaction or a radioactive decay process
Photoelectric emission: emission of electrons or other free carriers when light shines on a material