Answer: B - When you calculate the number of products produced per hour by a factory that produced 16,000 items with 8 employees working one eight-hour shift five days per week, with a total of forty hours each, the result is 12.5 products per hour. This is calculated by dividing the number of products by the total work hours of the employees over the four-week period. The total work hours are equal to 8 employees x 40 hours per week x 4 weeks, which equals 1280 hours. Divide 16,000 items by 1280, and the answer is 12.5 products per hour.