What type of target is known to exist and created effects that support the commander's objectives?

The correct choice pertaining to the type of target that is known to exist and creates effects that support the commander's objectives is the priority target. Priority targets are identified and designated based on their importance in relation to the overall mission objectives. They are pre-planned, recognized by the command, and typically have significant operational value, meaning their destruction or degradation is crucial for the success of a particular mission.

Identifying a target as a priority indicates that it is not only acknowledged to exist but that its neutralization will help achieve specific tactical or strategic outcomes. This aligns tightly with the commander's intent and the desired effects in the operational environment.

In contrast, established targets refer to targets that are already known but might not necessarily align with current operational priorities or directly support the commander’s objectives. Dynamic targets, on the other hand, are targets that emerge during operations and require immediate attention but may not have been pre-identified as absolutely critical. Approved targets generally imply that they have gone through a review or validation process but do not inherently indicate their alignment with the commander's objectives in the same manner that priority targets do.