Which of the following is true regarding nuclear fission and nuclear fusion?
a. both of these processes are equally complex to control.
b. nuclear fission involves combining elements, while nuclear fusion involves breaking down elements.
c. both of these processes can provide energy. '
d. our sun's heat is an example of both of these processes.

Nuclear fission and nuclear fusion both of these processes can provide energy. Nuclear fission is the process in which heavy nucleus splits into smaller parts. When they split into smaller particles then it releases energy.

On the other hand, nuclear fusion is the process in which small particles fuse together to form a heavy nucleus. With the formation of heavy nucleus, it also provides energy.

Therefore, both these processes release or provide energy.

The true statement is C.

Explanation:

Nuclear fission is the process of the splitting of the unstable heavy nucleus into the lighter nuclei. The huge amount of energy is produced during this process. Hydrogen bomb is the example of the nuclear fission.

Nuclear fusion is the process in which two lighter nuclei combine together to give a heavy nucleus and the tremendous amount of energy is released in this process. Nuclear fusion occurs in the Sun.

Therefore, both these processes can provide energy.

the answer is d. 74.02