Questions: During an emergency or a disaster, a person may be given a different job or role. Finding out about this role should - Wait until a disaster happens. - Be done with a committee of coworkers. - Happen during disaster drills. - Involve a talk with their manager.

The answer is: Happen during disaster drills.

Explanation for each option:

1. Wait until a disaster happens: This option is incorrect because waiting until a disaster occurs to find out about a new role is impractical and can lead to confusion and inefficiency during an emergency. It is important to be prepared in advance.

2. Be done with a committee of coworkers: While involving coworkers in discussions about roles can be beneficial, it is not the most direct or efficient method for ensuring everyone knows their role during an emergency. This option is less practical compared to the others.

3. Happen during disaster drills: This option is correct because disaster drills are designed to prepare individuals for emergencies by simulating real-life scenarios. During these drills, people can learn about their roles and responsibilities, ensuring they are ready to act effectively when a real disaster occurs.

4. Involve a talk with their manager: While discussing roles with a manager can be helpful, it is not as comprehensive as participating in disaster drills. Drills provide practical experience and help reinforce the understanding of roles in a more dynamic and realistic setting.

In summary, the most effective way to ensure a person knows their role during an emergency is through participation in disaster drills.