Answer:
The best policy for the U.S. to follow to maximize the well-being of all U.S. workers is:
A. Pull out of free trade agreements such as NAFTA that potentially harm U.S. manufacturing workers, in the hope that jobs in the manufacturing industries will return to the U.S.
Step-by-step explanation:
The other three options still impose some kind of tariffs on imported goods, which negate free trade agreements. The best way out is to pull out, and then renegotiate trade agreements. That is exactly what the Trump administration did with the new United States-Mexico-Canada Agreement (USMCA). This new agreement, which replaced NAFTA, was concluded by the three countries on July 1, 2020. According to the USMCA, the new trade agreement will equally benefit all workers, farmers, ranchers, and businesses in the US, Mexico, and Canada.