The basic fusion reaction through which the sun produces energy is

a. e = mc2
b. 4 helium nuclei fuse to make 1 hydrogen nucleus
c. 2 protons and 2 neutrons fuse to make 1 helium nucleus
d. 4 hydrogen nuclei fuse to make 1 helium nucleus

d. 4 hydrogen nuclei fuse to make 1 helium nucleus

Explanation:

As we know that sun is the largest source of energy and it produce high amount energy by performing a fusion reaction in the core of the sun.This reaction us known as nuclear fusion.In fusion reaction 4 hydrogen nuclei fuse and produce 1 helium nucleus.

So the answer is d.

d. 4 hydrogen nuclei fuse to make 1 helium nucleus

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