Answer:
A. introduction of innovations to promote sustainable development.
Step-by-step explanation:
Sustainable development is a system of living that is geared at making innovations that would not only prove beneficial to the present society, but that would also not cause harm to future generations. The innovations mentioned in the question include;
1. Bicycle path networks which would increase the use of bicycles and thus limit air pollution from cars.
2. Bus rapid transit systems which would take in a lot more passengers, thus reducing the number of vehicles on the roads. It solves the problem of congestion and air pollution.
3. Expanded nature preserves that would curb the issue of deforestation and air pollution.