Which of the following factors could exclude coverage under a commercial property policy?

The factor that could exclude coverage under a commercial property policy is the presence of insufficient safety measures against specific risks. Insurers often require businesses to implement reasonable safety practices to mitigate risks associated with their operations. When a business fails to adhere to these safety standards, the insurer may view this as a lack of due diligence, which could lead to a denial of coverage in the event of a claim related to those specific risks.

For instance, if a business does not have proper fire safety measures in place, and a fire occurs as a result of that negligence, the insurance company could exclude coverage because the business did not take necessary precautions to prevent the issue. This emphasizes the insurer's reliance on the policyholder's proactive measures in risk management as a condition for coverage.

In contrast, maintaining regular upkeep and performing proper storage of hazardous materials generally aligns with safety practices that insurers expect from policyholders. These actions typically demonstrate a commitment to maintaining a safe environment. Third-party damage to property may raise questions about liability and coverage limits, but it does not inherently exclude coverage under a commercial property policy.