For which type of programs would a government most likely use a cost-benefit analysis? check all that apply. changing a school lunch program building a small or large courthouse hiring new police officers and firefighters planning when to repave a road hiring new teachers for a school

These are the types of programs a government would most likely use a cost benefit analysis:
changing a school lunch program, hiring new police officers and firefighters, planning when to repave a road and hiring new teachers for a school. 
So, building a small or large courthouse is not in the type of program, all other options are in the type of programs.

Icould be wrong but i would say b.

To solve their problems, mesopotamians used irrigation, a way of supplying water to an area of land. to irrigate their land, they dug out large storafe basins to hold water supplies these ditches brought water to the feilds. to protect their feilds from flooding, farmers built up the banks of the tigris and euphrates.hope ths !