Correct Answer: Recycling

Solution : The correct answer is (a) Recycling

Recycling is the process of collecting, sorting, and processing waste materials to convert them into new products or raw materials that can be used again. It helps to reduce the consumption of new resources, conserve energy, and minimize waste generation. Recycling involves various steps, such as collection, sorting, cleaning, and processing of recyclable materials, followed by their transformation into new products through manufacturing processes. This sustainable practice plays a crucial role in waste management and environmental conservation. Options b) Incineration, c) Composting, and d) Landfilling refer to other waste management methods, but they do not involve the conversion of waste into reusable materials like recycling does.