Final answer:
In urban planning, "PA" stands for Planning Authority, which is responsible for the development and management of land use and creating policies for how land is utilized.
Step-by-step explanation:
In the context of urban planning, "PA" refers to Planning Authority. This is the organization responsible for overseeing the development and management of land use in a given area. They work to create plans and policies that guide how land should be used, including where buildings and infrastructure can be placed, how space is allocated for residential, commercial, industrial, and recreational purposes, and how to preserve historical or environmentally sensitive areas.