Which of the following is NOT a waste disposal method?

Manufacturing is not a waste disposal method because it refers to the process of producing goods and products. The focus of manufacturing is on creating items through the use of raw materials and resources. In contrast, waste disposal methods specifically address the management and disposal of waste materials generated from various activities, including manufacturing itself.

Gasification, landfill, and composting, on the other hand, are all methods used to deal with waste. Gasification involves converting organic or fossil-based materials into carbon monoxide, hydrogen, and carbon dioxide through high-temperature treatment. Landfill is a method where waste is buried and managed in a designated location, while composting involves the natural decomposition of organic waste to produce a nutrient-rich soil amendment. Each of these methods serves the purpose of managing waste, whereas manufacturing is focused on production rather than waste management.