Final answer:
A firm pursuing a differentiation strategy would use mentoring programs, while a firm pursuing a cost strategy would use on-the-job training.
Step-by-step explanation:
A firm pursuing a differentiation strategy would be most likely to use mentoring programs for employee development, while a firm pursuing a cost strategy would be more inclined to use on-the-job training. Mentoring programs involve an experienced employee guiding the work of a new employee, which helps foster creativity and innovation in a differentiation strategy. On-the-job training, on the other hand, focuses on providing specific skills and knowledge required for the job at hand, which aligns with the cost strategy of efficiency and standardization.