Answer:
a. The U.S. has the absolute advantage in the production of both shoes and apples
Step-by-step explanation:
This statement compares the efficiency of a worker from the USA and Canada in performing two different tasks. According to this assumption, the American worker produces twice as many shoes as the Canadian worker, since the first produces 20 pairs of shoes per day, while the second produces only 10. Likewise, the American worker is 5 times more efficient than the Canadian worker in growing apples, since the American produces 100 apples per day, while the Canadian only 20. In conclusion, the U.S. has the absolute advantage n both tasks.