What term refers to the total amount of a good or service that is available for purchase?
demand
supply
scarcity
opportunity cost

It is actually A. Demand. Hope this helps! :P

1. they could both use a veto to cancel an action.

2. women couldn't vote in the roman republic but could in the united states

i confess that there are several parts of this constitution which i do not at present approve, but i am not sure i shall never approve them: for having lived long, i have experienced many instances of being obliged by better information or fuller consideration, to change opinions even on important subjects, which i once thought right, but found to be otherwise. it is therefore that the older i grow, the more apt i am to doubt my own judgment, and to pay more respect to the judgment of others.