Who is primarily responsible for ensuring compliance with AR 735-5?

The correct choice reflects that the unit commander holds the primary responsibility for ensuring compliance with AR 735-5, which governs property accountability policies within the Army. The role of the unit commander encompasses overall leadership and operational effectiveness, making them accountable for the management of unit property. This includes ensuring that all personnel adhere to property accountability standards, maintaining accurate records, and conducting regular inventories.

The unit commander is responsible for establishing a culture of accountability and readiness, which is crucial for mission success. They must ensure that policies are implemented effectively and that all personnel understand their responsibilities regarding military property. While other roles, such as the property book officer and supply sergeant, have specific responsibilities related to the management and oversight of property, it is ultimately the unit commander who is accountable for maintaining compliance with regulations like AR 735-5.