Discuss one initiative or policy that the Pakistani government could implement to address air pollution in major cities.

Here's the answer to Q.5.1:

Q.5.1: Discuss one initiative or policy that the Pakistani government could implement to address air pollution in major cities.

One initiative the Pakistani government could implement is the promotion of electric vehicles (EVs) and enhancement of public transportation systems. This policy would involve offering incentives for EV purchases, establishing charging infrastructure, and expanding efficient public transport networks (like metro buses and trains). By reducing reliance on fossil fuel-powered private vehicles, this initiative would significantly decrease vehicular emissions, a major contributor to urban air pollution, leading to cleaner air in major cities.