What adjustment technique is most suitable to achieve responsive fire when the observer is experienced?

The selection of the hasty bracketing technique for an experienced observer is appropriate because this method allows for rapid and effective adjustments in fire direction. An experienced observer is capable of making quick assessments based on the initial impacts and can efficiently guide the fire to the target.

Hasty bracketing relies on the observer's ability to determine the correct direction and range based on the observed impacts of rounds fired, adjusting the next rounds in a swift manner to focus on the target. This is particularly suitable in situations where time is essential, and the observer's skill and experience enable them to minimize the time spent in adjustments while maximizing the effectiveness of fire support.

In contrast, other techniques may take longer or require more precision that may not be necessary when the observer can quickly assess and react to the situation. Therefore, hasty bracketing leverages the observer’s expertise to achieve a responsive and precise application of fire in dynamic operational environments.