Final answer:
Difficulties in training staff about food safety can be caused by language barriers, lack of clear communication, and inconsistent policies.
Step-by-step explanation:
Difficulties in training staff about food safety can be caused by language barriers, as it could hinder effective communication and understanding of important information. Clear communication and consistent policies are actually important factors in successful training as they promote understanding and uniformity in food safety practices. Regular training sessions are also crucial to keep staff updated on important regulations and procedures.