Which of the following is NOT a guideline for determining priority calls?

The rationale for selecting the situation with no injuries as the response that is NOT a guideline for determining priority calls stems from the fundamental principles of emergency response prioritization. Priority calls are assessed based on the potential threat to life and the urgency of the situation.

When evaluating priority calls, incidents that involve a loss of life or potential injury take precedence, as any situation where life is at stake requires immediate attention and resources. Similarly, crimes in progress are critical to prioritize, especially if they pose a threat to individuals or the community. The presence of weapons significantly elevates the urgency of a call, as this indicates a heightened risk of harm.

In contrast, a situation without injuries, while it may still be important, does not inherently carry the same level of urgency or immediate threat to life. Therefore, it would not be used as a guiding principle for prioritizing responses in emergency dispatch, making it the correct answer to the question.