Lower wages in the U. S. auto industry would the prices of autos and the quantity exchanged.

Lower wages in the U.S. auto industry would DECREASE the prices of autos and INCREASE the quantity exchanged.

Explanation:

When the price of key inputs decreases, the supply curve shifts to the right, increasing the total quantity supplied and at the same time decreasing the equilibrium price. The same would happen if the price of steel, plastics (oil) or any other key input decreased.

On the other hand, an increase int he price of key inputs will shift the supply curve to the left, decreasing the total quantity supplied and increasing equilibrium price.

answer(d) encourage cooperation by improving the chances of mutually agreeable transactions;