Which of the following perils is excluded under BOP peril exclusions?

A Businessowners Policy (BOP) provides coverage for a range of perils, but it also includes specific exclusions to limit the insurer's risk. One of the primary exclusions found in BOPs is for acts of war. This exclusion is in place because war-related events can lead to extensive and catastrophic losses, making them too unpredictable and financially damaging for insurers to cover.

The other options listed—fire, lightning, and explosion—are typically covered perils under a BOP, as these are common risks that most businesses face and are scenarios that insurers generally expect to provide coverage for. Fire and lightning are inherent risks associated with property loss, and explosions, depending on the context, can also be covered. The exclusion of war recognizes the significant and potentially devastating impact of military conflict, which creates a necessary boundary for risk management in insurance policies.