Identify the practical measure from the following to control air pollution in the metropolitan cities in India

Identify the practical measure from the following to control air pollution in the metropolitan cities in India. Choose the most appropriate option.
(A) Public Transport with Ring Railway
(B) Carpooling with Metro Rail
(C) Metro Rail with CNG Buses
(D) Ring Railway with CNG Buses

Correct Answer : (C) Metro Rail with CNG Buses

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