Use of e-rickhsaws could be considered as step towards sustainable development :

Correct option is C

The correct answer is (c) It uses clean energy.
E-rickshaws are powered by electricity, which is a clean energy source. They do not produce any emissions, unlike traditional rickshaws that are powered by human labor. This makes e-rickshaws a more sustainable mode of transportation.
Option (a) is incorrect. While e-rickshaws do contribute less to environmental pollution than cycles, they are not as clean as cycles. Cycles produce zero emissions and do not require any energy to operate.
Option (b) is incorrect. E-rickshaws do not use non-renewable sources of energy. They are powered by electricity, which can be generated from a variety of renewable sources, such as solar, wind, and hydro power.
Option (d) is incorrect. E-rickshaws do not use physical labor of the rickshaw pullers. They are powered by electricity and do not require any human effort to operate.
Therefore, the only valid statement is (c) It uses clean energy. E-rickshaws are a more sustainable mode of transportation than traditional rickshaws because they use clean energy.