Jane, do you have notes with you? Qns are getting more straight forward.

Fission means breaking up or splitting.

Fusion means combining or joining (the verb is 'fuse'. Not be to confused with the fuse in electrical circuits)

So the first two are wrong already.

From https://www.energy.gov/science/doe-explainsnuclear-fusion-reactions :


Nuclear Fusion reactions power the Sun and other stars.

In a fusion reaction, two light nuclei merge to form a single heavier nucleus.

The process releases energy because the total mass of the resulting single nucleus is less than the mass of the two original nuclei.


So answer is (D)


These are basic factual recall questions. If you're having trouble with these you should revise more thoroughly

Thank you very much for your guidance and assistance, J & Yong Kc.