What is the minimum range for the M777A2?

The minimum range for the M777A2 howitzer with standard High-Explosive (HE) projectiles is indeed 15 kilometers. This range is primarily a result of the design and capabilities of the weapon system, which incorporates advanced technology to provide effective fire support.

The M777A2 utilizes a lightweight construction with an advanced digital fire control system, allowing it to achieve optimal performance across a range of distances. The 15-kilometer minimum range ensures that the howitzer can effectively engage enemy positions without risking friendly forces or collateral damage in scenarios where precision is critical.

The other range options suggest shorter distances for the minimum effective fire, which do not align with the established specifications of the M777A2. The correct answer identifies both the capabilities of the artillery system and the operational parameters necessary to fulfill its role on the battlefield effectively.