Which abbreviation refers to a measurement related to artillery?

The abbreviation "DAP" stands for "Distance At Point," which is specifically relevant in the context of artillery measurement. It refers to the effective range or point where the artillery shell is expected to impact when fired at a specific angle and charge. Understanding DAP is crucial for artillery personnel, as it allows them to accurately determine firing solutions and assess the impact of their fire on the target.

The other abbreviations, while they may pertain to different military terms or procedures, are not specifically associated with direct artillery measurements. Thus, "DAP" is the most appropriate choice for indicating a measurement related to artillery.