Which action is listed to reduce energy consumption?

Which action is listed to reduce energy consumption?

• A. Install a solar panel on the roof.
• B. Keep lights on all day.
• C. Cover pans while boiling water.
• D. Do nothing.

Answer: (C)

The main idea is improving energy efficiency by reducing heat loss during a common task. Covering a pan while boiling traps heat and steam, which lowers heat loss to the surrounding air. That means the water heats to boiling faster and with less energy input from the stove, and it also reduces energy wasted through evaporation. In contrast, keeping lights on all day wastes electricity, installing a solar panel is a longer-term energy-reduction strategy not tied to the boiling task itself, and doing nothing uses energy without cutting usage. So, covering the pan directly reduces the energy required for boiling and is the best immediate action.

The main idea is improving energy efficiency by reducing heat loss during a common task. Covering a pan while boiling traps heat and steam, which lowers heat loss to the surrounding air. That means the water heats to boiling faster and with less energy input from the stove, and it also reduces energy wasted through evaporation. In contrast, keeping lights on all day wastes electricity, installing a solar panel is a longer-term energy-reduction strategy not tied to the boiling task itself, and doing nothing uses energy without cutting usage. So, covering the pan directly reduces the energy required for boiling and is the best immediate action.