Which of the following scenarios would likely NOT establish a breach of duty in negligence?

The scenario in which a business follows safety regulations and a customer still gets injured likely would not establish a breach of duty in negligence because it demonstrates that the business took reasonable care to comply with established safety standards. In negligence law, to establish a breach of duty, it must be shown that the defendant failed to meet the standard of care expected in the circumstances. If a business adheres to all applicable safety regulations, it indicates that they are fulfilling their obligations to maintain safety and protect their customers.

In this context, the law can recognize the fact that accidents can occur despite best practices and compliance with regulations. Therefore, even if an injury happens, it does not automatically mean that the business acted negligently or breached its duty of care. Instead, the other scenarios feature actions or omissions that clearly indicate a failure to meet the standard of care expected in their respective situations.