The correct answer is A. Post.

In the ASIS PSP Body of Knowledge, general, post, and special orders are specifically included under the implementation of physical security measures and requirements for security personnel.

Post orders are written instructions for security officers assigned to a specific post or guard station. They explain the officer’s duties, procedures, responsibilities, emergency actions, reporting requirements, patrol expectations, access control duties, and other site-specific instructions.

The wording in the question closely matches the purpose of post orders because they:

address specific duties or subjects in clear language,

are available at the guard post or guard station,

guide officers during daily operations, and

provide the foundation for site-specific training.

The other options are not the best answer:

Special orders usually address temporary, unusual, or individual assignments.

General orders apply broadly to security personnel and are not usually limited to one guard station.

Standing orders may be continuing instructions, but the site-specific document kept at a guard station for officer duties and training is best described as post orders.

Therefore, the correct answer is A. Post.