Final answer:
The role of measuring the group's work against assigned objectives is fulfilled by the Evaluator-critic, who is responsible for using criteria and objective evidence to make informed judgments about the group's performance.
Step-by-step explanation:
Measuring the group's work against the assigned objectives is the responsibility of the Evaluator-critic. The role of the Evaluator-critic in a group is crucial as it involves assessing the effectiveness and the quality of the group's work to ensure that the project goals and criteria are met. This process includes gathering sufficient and relevant evidence to support their judgment, maintaining objectivity, and providing feedback that can be acted upon to improve the project's outcome. This role is different from those of the Orienteer, Coordinator, and Recorder, who serve other functions within a group dynamic. An Orienteer helps to set the group's direction, a Coordinator organizes the group's activities, and a Recorder keeps track of information and minutes.