Concept:Retraining helps workers gain new skills and knowledge, which directly improves their productivity.
Explanation:Productivity depends on a worker's ability and motivation.
Engaging in retraining workshops equips workers with updated techniques and better ways of doing their jobs.
This improves efficiency, quality of work, and overall output.
Regular supervision and punishment create fear, not lasting improvement.
Short reading courses may help but are not as practical as retraining.
Providing tools alone is not enough because workers must also know how to use them well.
Answer:C. engaging in retraining workshops.