The introduction of electric buses in Karnataka promotes:

The correct answer is D. All of the above.

Electric buses are powered by electricity, which is a renewable resource. This means that they do not produce greenhouse gases or other pollutants, which can help to improve air quality and reduce climate change. Additionally, electric buses are much more efficient than diesel buses, which means that they require less energy to operate. This can lead to reduced operational costs for bus operators. Finally, electric buses are often quieter and smoother than diesel buses, which can provide a more comfortable ride for passengers.

Here are some additional details about each of the options:

• Environmental sustainability: Electric buses do not produce greenhouse gases or other pollutants, which can help to improve air quality and reduce climate change.
• Reduced operational costs: Electric buses are much more efficient than diesel buses, which means that they require less energy to operate. This can lead to reduced operational costs for bus operators.
• Improved passenger experience: Electric buses are often quieter and smoother than diesel buses, which can provide a more comfortable ride for passengers.