Answer: True
Explanation: Nuclear fusion uses lighter elements, such as hydrogen and helium, which are in general more fusible; while the heavier elements, such as uranium, thorium, and plutonium, are more fissionable. Due to the huge amount of energy, two nuclear elements are combing with each other. Hence, nuclear fusion is a process in which nuclear reactions within light elements form heavier ones, absorbing huge amounts of energy. So, the statement is correct. Then, the given statement is true.