Final answer:
Productivity improvements, such as the use of technology and computerization, have resulted in the loss of manufacturing jobs in Canada over the last two decades.
Step-by-step explanation:
Productivity improvements, such as the use of technology and computerization, have resulted in the loss of manufacturing jobs in Canada over the last two decades. The specific number of jobs lost would depend on various factors and cannot be determined accurately. However, based on the options provided, the answer would be one of the given options: A. 150,000, B. 250,000, C. 350,000, D. 450,000, or E. 550,000.