Answer:
(b) Governments are usually responsible for building and maintaining the built environment.
Step-by-step explanation:
Public works, which are the responsibility of Government, generally have a considerable civil engineering content. Government employs civil engineers to propose, design, and oversee the construction of such projects.
In some cases, the government employee simply needs to be knowledgeable enough to understand the work done by the contractor's engineers. In other cases, the government employee must make sure the contractor's engineering work is accurate and complete, makes use of appropriate technology, and is in compliance with appropriate regulations and standards. That can require educating the contractor--more than simple oversight.