Which action should be taken to limit the spread of materials during an emergency, if safe to do so?

Limiting the spread of materials during an emergency is crucial for minimizing potential harm to individuals and the environment. Taking this action helps contain hazardous substances, preventing them from affecting wider areas or coming into contact with people. This step is generally prioritized to protect public safety and ensure that further complications do not arise during the emergency situation.

In emergencies, it is important to act swiftly and effectively, focusing on containment first. Once the immediate threat is limited, other actions can be taken, such as notifying authorities or organizing cleanup efforts. Depending on the situation, other measures like sealing off the area might also be necessary, but the primary focus should be on preventing the further spread of dangerous materials while ensuring personal safety.