Final answer:
Adjusting when most electricity is used in the home is an effective energy conservation practice, as it reduces peak electricity usage and saves on energy costs. Other measures include less reliance on air conditioning, regular maintenance of systems, and choosing energy-efficient devices like fluorescent light bulbs.
Step-by-step explanation:
Energy conservation practices are methods and behaviors that result in the use of less energy, primarily to save resources and reduce environmental impacts. Among the options provided, the action that can be considered as an energy conservation practice is to adjust the time when most electricity in the home is used. This is noted as a cost-effective way to reduce energy consumption, especially during peak hours when electricity rates may be higher.
Using air conditioning less and ensuring that the air conditioner filters are changed regularly will also lead to energy conservation. In addition, one can install more energy-efficient devices like compact fluorescent light bulbs, which consume less power for the same amount of light compared to incandescent bulbs. Overall, reducing the operational time of high-power devices and using more efficient technologies are key strategies for energy conservation.