Jerichos status as the first city with a wall indicates that a. it was the first city built in during the old stone age b. it was the first time concrete was used as a building material c. it had a government that could organize construction projects d. it was the first time a wall was used to connect two cities

The correct answer is it had a government that could organize construction projects. It shows that there were actually people who sat down and decided what would be done to the city and how and that it was organized and legitimate. They weren't doing it illegaly, which implies that there was some kind of governmental organization.