Final answer:
Metalloproteins that contain manganese ions act as metalloenzymes and play a role in the detoxification reaction by converting the superoxide anion into hydrogen peroxide.
Step-by-step explanation:
Metalloproteins that contain manganese ions act as metalloenzymes and are involved in various biological processes. One example of a manganese-containing metalloenzyme is manganese superoxide dismutase (MnSOD), which plays a crucial role in protecting cells from damage caused by reactive oxygen species. MnSOD is involved in the detoxification reaction by converting the superoxide anion into hydrogen peroxide. Therefore, the correct answer is a) Photosynthesis.