Correct Option: D

Some of the methods of solid waste disposal and management are :
➤ Open burning
➤ Dumping into the sea
➤ Sanitary Landfills
➤ Incineration
➤ Composting
➤ Ploughing in fields
➤ Hog feeding
➤ Grinding and discharging into sewers
➤ Salvaging
➤ Fermentation and biological digestion
Bricketting that involves the solidification of preprocessed municipal solid waste into fuel pellets or briquettes is the least preferred method of solid waste disposal.