Which of the following sets of elements represents the four levels of training evaluation?

Detailed Explanation: The four levels of training evaluation are commonly known as the Kirkpatrick Model: Reaction, Learning, Behavior, and Results. This model evaluates training effectiveness by measuring participants’ immediate reactions, knowledge acquired, changes in behavior, and the impact on organizational results. According to the BoK, evaluating training at multiple levels provides insights into the training ' s effectiveness and its contribution to achieving quality objectives.