One major reason seems to be that manufacturing firms find it difficult to capital for land, while service-sector firms that use office space do not. why do you think it is relatively for a law firm or an insurance company to substitute capital for land?

a. manufacturing firms prefer to operate away from inner only congestion.
b. service - sector industries can afford the higher rent of downtown office space.
c. manufacturing firms generally use the natural resources of the land they occupy.
d. since people can take stains or elevators, offices can be stacked assembly lines cannot.