A criterion used to assess friendly actions related to task accomplishment is called?

The correct response is focused on the concept of evaluating friendly actions in relation to the successful achievement of a specific task. The term "Measure of Performance" refers to a standard used to determine how well a unit is executing tasks or missions. It typically looks at the activities undertaken during an operation, assessing whether they were carried out according to the established standards and guidelines. This can include metrics such as timeliness, accuracy, and efficiency of actions taken by the unit.

In contrast, while collateral damage estimates, effects assessments, and measures of effectiveness all pertain to military operations, they serve different purposes. Collateral damage estimates primarily assess the unintended consequences of actions taken, like civilian casualties or destruction, rather than evaluating the execution of friendly actions. Effects assessments analyze the outcomes of actions in terms of operational success or failure but are broader in scope. Measures of effectiveness, on the other hand, evaluate whether a task or mission has achieved its intended strategic objectives instead of simply assessing performance metrics. Therefore, "Measure of Performance" is the most suitable criterion for assessing the execution of tasks.