Question content area

Part $1$

We do not see complete specialization in the real world because

Part $2$

A$.$

not all goods and services are traded$$ internationally, production of most goods involves increasing opportunity$$ costs, and tastes for products differ.

B$.$

not all goods and services are traded$$ internationally, production of most goods involves decreasing opportunity$$ costs, and tastes for products differ.

C$.$

not all goods and services are traded$$ internationally, production of most goods involves constant opportunity$$ costs, and tastes for products are remarkably uniform.

D$.$

all goods and services are traded$$ internationally, production of most goods involves increasing opportunity$$ costs, and tastes for products are remarkably uniform.