A process is occurring throughout the day, in X organism

A process is occurring throughout the day, in X organism. Cells are participating in this process. During this process, ATP, ${{CO}_{2}}$ and water are evolved. It is not a light dependent process.
(i) Name the process.
(ii) Is it a catabolic or an anabolic process? .
(iii) What could be the raw material for this process?

(i) Respiration (ii) It is a catabolic process (iii) Glucose, fat or protein.