Answer :
In the context of sustainable energy production, the option that is not considered sustainable is:
B. Oil
Oil is not a sustainable form of energy production because it is a finite resource that is non-renewable. This means that once oil reserves are depleted, they cannot be easily replaced within a short period of time. Using oil as a primary source of energy leads to environmental issues like air and water pollution, and it contributes to climate change due to the release of greenhouse gases during its extraction and combustion.
On the other hand, options like wind, solar, and water (hydropower) are considered sustainable forms of energy production because they rely on naturally replenished resources that are abundant and do not deplete over time. Wind and solar energy are renewable sources that harness power from the sun and wind, while hydropower utilizes the energy of flowing water to generate electricity. These sustainable energy sources have minimal environmental impact and provide a clean alternative to fossil fuels like oil.