The Regulations on the Administration of Work Safety in Construction Projects stipulates that workers should receive education and training on work safety before entering new posts or new construction sites. Without education and training or education and training examination unqualified personnel shall not work at their posts. The State Council Security Committee's Decision on Further Strengthening Safety Training pointed out that the pre-job training system for employees should be strictly implemented. Construction enterprises should conduct at least 32 hours of safety training and at least 20 hours of retraining for new employees every year. So option c is correct. See exam book 2Z206025.