Non-biodegradable wastes are materials that do not decompose naturally through biological processes.
- Leather footwear, plastic plates, and polythene bags are examples of non-biodegradable materials that persist in the environment.
- Biodegradable wastes include substances like used tea leaves, cardboard, and food waste, which decompose naturally.
Thus, the correct answer is (A) Leather footwear, Plastic plate, Polythene bag.