Based on the text, the correct facts regarding decomposition are: 1) It is largely an oxygen-requiring process . 2) The rate is slower if detritus is rich in lignin and chitin, and quicker if rich in nitrogen and water-soluble substances . 3) Warm and moist environments favor decomposition, whereas low temperature and anaerobiosis inhibit it . Therefore, statements suggesting that decomposition is anaerobic, inhibited by warm/moist conditions, or favored by low temperature would be incorrect. Assuming (c), (d), and (e) correspond to such incorrect statements (e.g., regarding climatic factors and oxygen requirements), option 4 is the correct answer.