The correct answer is Food waste.Concept:Waste materials: Waste materials are either liquid or solid in form, and their components may be either hazardous or inert in their effects on health and the environment.The term waste is typically applied to solid waste, sewage (wastewater), hazardous waste, and electronic waste.Explanation:Biodegradable waste: Those substances that can be decomposed by the action of decomposers like bacteria and fungi are called biodegradable wastes.For example: organic matter like human excreta, animal waste, dead bodies of plants and animals, leftover food items etc.?Non-biodegradable waste:Those substances that can not be decomposed by the action of decomposers like bacteria and fungi are called non- biodegradable wastes.For example: plastic, rubber, glass, artificial clothes like nylon, rayon, electronic waste like batteries, etc.