Final answer:
The United States restricted the import of fresh tomatoes from Mexico due to the fear that the tomatoes carried harmful pests that could damage domestic crops.
Step-by-step explanation:
The United States recently restricted the import of fresh tomatoes from Mexico because the tomatoes carried pests that were detrimental to crops in the United States. This is represented by option A. The fear of pests damaging domestic crops led to the restriction on tomato imports. By doing so, the United States aimed to protect its agricultural industry and prevent potential harm to its crops.