Answer:
The correct answer is option B. "Conservation".
Step-by-step explanation:
Energy conservation is the ecological practice of reducing the consumption of energy by reducing the use of a service that involves energy consumption. In this example the person is reducing the consumption of chemical energy by taking a bike ride instead of a car ride, therefore he or she is practicing energy conservation. This practice helps to conserve the chemical energy contained in the fuel, and helps to save it for the future.