Terry Worked at an Auto-Manufacturing Plant for Over 30 Years

Terry worked at an auto-manufacturing plant for over 30 years. Imagine his shock when he and his coworkers were informed that the factory was closing down and relocating to Mexico. What underlying factor precipitated the unemployment of Terry and his coworkers?

A) rising corporate and personal taxes
B) a decreased demand for Canadian-manufactured automobiles
C) more skilled and professional workers in Mexico
D) free trade agreements with the United States and Mexico