What requirement helps ensure financial responsibility after an accident occurs?

The option that correctly ensures financial responsibility after an accident occurs is providing proof of insurance. When a driver presents proof of insurance, it indicates that they have a valid insurance policy that can cover damages or injuries that may result from an accident. This financial backing is crucial for making sure that all parties involved in an accident can be reimbursed for costs associated with property damage, medical expenses, and other related claims.

The others do not serve the same purpose of ensuring immediate financial responsibility post-accident. Certification of future responsibility implies an obligation that may arise after an incident but does not guarantee coverage at the time of an accident. Submitting a claim within a specific timeframe is also important for managing the claim process but does not directly address the immediate financial liability following an accident. Finally, attending a defensive driving course, while beneficial for improving driving skills, does not directly impact the financial obligations an individual incurs after an accident has already taken place.