Wind energy converts the kinetic energy of moving air into electrical energy using turbines. It is replenished naturally by atmospheric processes and does not get exhausted by human use. The stem directly refers to electricity from moving air masses,so “wind” is the correct term. Wind energy is a key renewable source in sustainable energy strategies.
Option A:
Wind is continuously generated by differential heating of the Earth’s surface and rotation of the planet. This makes it a renewable and virtually inexhaustible energy source on human time scales. These features align exactly with the description in the question.
Option B:
Nuclear energy comes from fission or fusion of atomic nuclei and does not depend on moving air masses. While low carbon,it is a different technology from that described in the stem.
Option C:
Coal is a fossil fuel formed over millions of years and is non renewable. It also emits large amounts of carbon dioxide when burnt,so it does not match the clean renewable context hinted in the question.
Option D:
Petroleum is another finite fossil fuel used mainly in transport. It is not related to electricity generation from wind turbines,so this option is clearly incorrect.
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