Final answer:
The first importance in the performance of duty is safety and willingness to obey the rules.
Correct option is b.
Step-by-step explanation:
The first importance in the performance of duty is safety and willingness to obey the rules. This means that ensuring the safety of yourself and others, as well as following all rules and regulations, is crucial in the workplace. By prioritizing safety and obedience, you create a secure and efficient environment where everyone can perform their tasks effectively.