This term refers to when members in a society must rely on others to supply products and services they cannot provide for themselves.

a.) comparative advantage
b.) absolute advantage
c.) specialization
d.) interdependence

*note - my answer choice is a, but i'm not to sure.

An electronics store is running a promotion where for every video game purchased, the customer receives a coupon upon checkout to purchase a second game at a 50% discount. the coupons expire in one year. the store normally recognized a gross profit margin of 40% of the selling price on video games. how would the store account for a purchase using the discount coupon?