Answer: Washington to exchange apples with Texas and receive money in return.
Explanation:
The picture relating to the question has been attached.
From the question, we are informed that Michigan has surplus autos, and wants lettuce. Texas has surplus lettuce and wants apples. Washington has surplus apples and wants autos.
If trade occurs among the three states, Washington will exchange its apples with Texas since it has surplus apples and Texas also want apples. Of the three states, it is only Washington that has surplus apples so it can exchange with Texas for money.