If the marginal cost of making a good is $3.00, then you would supply the good if the price was
a $1.00
b $2.00
c $4.00

The answer would be C. This is because you made the product for a price and if it sells, you want to get money back so you could make more or keep it for yourself. So always, however much you make something for, its going to be higher in price

Protecting and assisting  u.s. citizens  living or traveling abroad; assisting u.s.  businesses  in the international marketplace; coordinating and providing support for international activities of other u.s. agencies (local, state, or federal government), official visits overseas and at home, and other diplomatic efforts.keeping the public informed about u.s. foreign policy and relations with other countries and providing feedback from the public to administration officials.providing  automobile registration  for non-diplomatic staff vehicles and the vehicles of diplomats of foreign countries having  diplomatic immunity  in the united states