Final answer:
The Urban/Rural Demarcation Line (URDL) in Baltimore County is an example of a smart growth policy dating back decades.
Step-by-step explanation:
True. The Urban/Rural Demarcation Line (URDL) in Baltimore County is an example of a smart growth policy that has been implemented for decades. Smart growth policies aim to promote sustainable development, reduce sprawl, and improve quality of life in both urban and rural areas. The URDL specifically helps to control and manage urban growth in Baltimore County by designating areas for development and preserving agricultural and rural land.