What is missing from the following objective: "Given a list of twenty behaviors, the student will indicate someone contemplating suicide?"

The objective specifies that the student will indicate behaviors related to someone contemplating suicide from a provided list. However, the objective lacks a specific measure of performance, commonly referred to as the "degree." The degree outlines the expected level of performance or how well the student should demonstrate the behavior.

In this case, it would enhance the objective to specify how accurately or consistently the student needs to indicate those behaviors, such as through a percentage correct or a specific number of behaviors they need to identify correctly. This addition helps ensure that the instruction has a clear benchmark for evaluating the student's performance, thus allowing for a better assessment of learning outcomes.

The audience, behavior, and condition elements are present, as the audience is implied to be the students, the behavior is the indication of the behaviors, and the condition is the list provided. However, without the degree component, the objective remains incomplete in terms of measuring student performance.