Question

a nuclear power facility harnesses energy via what energy process? nuclear fusion chemical reaction nuclear fission cold fusion

Explanation:

Nuclear power facilities use nuclear fission. In nuclear fission, heavy atomic nuclei (like uranium - 235) split into smaller nuclei, releasing a large amount of energy. Nuclear fusion (combining light nuclei) is not yet used in commercial power plants as it is difficult to control. Chemical reactions involve electron - level changes and release much less energy per atom compared to nuclear reactions. Cold fusion is a hypothesized but unproven type of fusion that is not a real - world energy source in power facilities.

Answer:

nuclear fission