Correct Answer:
A. Lahore
Lahore is the largest contributor to Punjab's GDP due to its status as the provincial capital and a major economic hub. Its economy is highly diversified, encompassing significant contributions from manufacturing, services, trade, and finance, supported by extensive infrastructure and a large population.
- Rawalpindi, while economically important, primarily serves as a military hub and a twin city to Islamabad, with a smaller overall economic footprint compared to Lahore.
- Multan is a significant agricultural and industrial center but lacks the broad economic diversification and scale of Lahore.
- Faisalabad is known as the 'Manchester of Pakistan' for its textile industry, yet its economic contribution, though substantial, is more specialized and does not surpass Lahore's comprehensive economic output.