The phase preceding the event in the domino theory is called which?

• A. Pre-Contact
• B. Contact phase
• C. Post-Contact phase
• D. After-Event

Answer: (A)

The domino theory views an accident as a chain of events, with a stage right before the hazardous contact occurs. That stage is called the Pre-Contact phase—the period when hazards are present but the contact that would trigger the accident hasn’t happened yet. The moment of contact itself is the event, so anything labeled as the contact phase would occur during the event, and post-contact or after-event describe times after the contact has occurred. Therefore, Pre-Contact is the right fit for the phase that comes before the accident-triggering contact.