To which territory does the Act extend?

As a provincial law, the Punjab Enforcement and Regulation Act extends to the entire Punjab Province. The foundational concept here is that provincial legislation is geographically limited to the boundaries of the province that enacts it. This ensures that laws are applied within their intended jurisdiction. Option A (Lahore Division) is too narrow, as the Act applies province-wide. Option C (Whole of Pakistan) is incorrect because it is a provincial, not federal, law. Option D (Punjab & Sindh jointly) is also false, as Sindh is a separate province with its own legislative authority.