The fundamental nuclear reaction occurring in the core of the sun is a. nuclear fission b. radioactive decay c. nuclear fusion of hydrogen into helium d. nuclear fusion of helium into carbon

Option (C)

Explanation:

The nuclear fusion reaction is usually defined as the reaction when two nuclei of much smaller atoms are fused with each other in order to form a heavier nucleus. In this type of reaction, a large amount of energy is being released. This fundamental nuclear reaction process takes place extensively in the core of the sun where the hydrogen atoms are combined to form helium, thereby helps in the conversion of mass into the form of energy.

This process emits photons which are of higher energy, commonly known as the gamma rays. These gamma rays propagates through the radiative layer of the sun that surrounds its core.

Thus, the correct answer is option (C).

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