Which of the following best represents the main problem for Amazon described in the case?

• Amazon employees are on the verge of forming a union, which is making negotiations with management more difficult.
• Amazon is receiving criticism for poor customer satisfaction as a result of its employees' inability to keep up with demand.
• Amazon managers are attempting to make conditions better for workers, but these plans are not being implemented correctly.
• Amazon faces difficulty offering better working conditions for its fulfillment center workforce because it loses money on its e-commerce operations, but those working conditions are resulting in critically low employee motivation.
• Amazon is failing to keep up with competitors' levels of employee productivity.