Switch off the lights, fans, television and other appliances when not in use
Make use of pressure cooker
Use of bicycle while going to school
One should use individual vehicle instead of public transport system
There are many different methods which can be used for the conservation of energy. The electrical appliances like the lights, fans, television, etc can be switched off whenever not in need. The use of pressure cooker saves combustion of fuel and inturn conserves energy. The bicycle can be used for travelling rather than the private vehicles. Thus, the correct answer is option D. Using an individual vehicle instead of public transport consumes more energy and is not an energy conservation approach.