Accidental incidents is the correct answer.

Nimbus Logistics has a business continuity plan with maintenance and recovery procedures and an incident response program. These controls are focused on restoring services after disruptions and on detecting and responding to security breaches. Because Accidental incidents are typically caused by human error and require operational controls such as training, change management, and procedural safeguards they are not primarily addressed by BCP or IRP.

System failures is incorrect because continuity and recovery procedures are specifically intended to handle hardware and software outages and to restore operations after failures.

Unauthorized intrusions is incorrect because an incident response program is designed to detect, contain, and remediate security breaches and intrusion events.

Environmental causes is incorrect because business continuity and recovery plans cover natural disasters, power loss, and other environmental impacts that affect availability.

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