Which of the following could be signs of a possible terrorist attack?

Which of the following could be signs of a possible terrorist attack?

• A. Unexplained patterns of illness or death
• B. Unusual containers out-of-place
• C. Strong chemical odors without apparent reason
• D. Calm weather

Answer: (A)

Recognizing a possible terrorist attack hinges on noticing when a problem affects people more broadly than normal. Unexplained patterns of illness or death across multiple individuals in a short period point to exposure to something hazardous being released, which is a strong signal that a malicious or large-scale incident could be occurring. This pattern prompts immediate protective actions and urgent reporting to authorities, because it suggests a spread of a hazardous agent and a need to stop further exposure. Other signs can be concerning in themselves—unusual containers out of place might raise questions about a suspicious device or material, and strong chemical odors can indicate an release—but they don’t provide the broad, population-wide indication that multiple people getting sick or dying does. Calm weather, by contrast, offers no link to a hazardous event.

Recognizing a possible terrorist attack hinges on noticing when a problem affects people more broadly than normal. Unexplained patterns of illness or death across multiple individuals in a short period point to exposure to something hazardous being released, which is a strong signal that a malicious or large-scale incident could be occurring. This pattern prompts immediate protective actions and urgent reporting to authorities, because it suggests a spread of a hazardous agent and a need to stop further exposure.

Other signs can be concerning in themselves—unusual containers out of place might raise questions about a suspicious device or material, and strong chemical odors can indicate an release—but they don’t provide the broad, population-wide indication that multiple people getting sick or dying does. Calm weather, by contrast, offers no link to a hazardous event.