Answer:
(D) Tremendous amounts of energy are involved in nuclear reactions.
Step-by-step explanation:
In the question,
A Nuclear Reaction can be defined as the reaction which takes place between an atomic nucleus and a photon or maybe a bombarding particle, that results in the creation of a new nucleus and the possible ejection of particles also take place at the same time.
As the disintegration of an atomic nucleus is a very difficult phenomenon it involves a lot of energy to make that possible so to make that possible tremendous amount of energy is required.
Whether in Fusion or Fission the integration or disintegration requires a lot of energy. Fusion needs a lot of energy and Fission produces a lot of energy.
Therefore, the correct option is (D).