The teacher explains to a student that a free throw was missed because the elbow was not in line with the basket. This is an example of

Task analysis involves breaking down a skill into its component parts to understand the necessary actions and requirements for successful execution. While the teacher is addressing the technique, they are not analyzing the task itself but rather providing feedback on the performance. Therefore, this option does not accurately describe the situation.

Simplified practice refers to modifying a skill or task to make it easier for a learner to grasp the essential components. While simplifying a practice task can aid learning, the teacher's action in this scenario is not about simplifying but about correcting an existing performance issue. Thus, this option does not fit the context.

Complexity of practice pertains to the difficulty level or intricacy of a skill being performed. The teacher’s feedback does not relate to the complexity of the free throw itself but rather addresses a specific error in execution. Therefore, this option does not apply to the example provided.