If the registration point is closer to the opposite end of the bracket, what range refinement does the observer determine?

The correct answer is based on the standard practices of range adjustment in artillery fire. When the registration point falls closer to the opposite end of the bracket during a fire mission, it indicates that the initial adjustments for indirect fire were not precise enough. The standard procedure in this situation is to apply a more significant range refinement to ensure that subsequent rounds land within the desired target area.

In this case, the standard refinement is to either add or drop 20 meters, which is a typical increment used for adjustments in artillery fire when dealing with registration points that are not optimally aligned. This refinement allows for a better accuracy of fire on target, enhancing the effectiveness of the observed engagement.

Other potential range refinements, such as Add or Drop 10, Add or Drop 25, or No Range Refinement Necessary, do not align with the correct practice for situations where the registration point indicates a need for a more substantial adjustment in the range to achieve more accurate fire results.