It B. higher prices cause supply shifts
I would say <span>a) efficiency
</span>this is the definition .<span>he ability of an individual or group to carry out a particular
economic activity more efficiently than another individual or group.</span>
Native Americans, on the other hand, traditionally regarded the land as a communal resource, with ownership vested in the group rather than in any one individual. ... Both Crèvecoeur and Jefferson have an ideal image of individual landowners cultivating and controlling the natural landscape.