Final answer:
Dennis missed the 'attention' step of the modeling process which is crucial in learning new behaviors or skills, such as the combination of moves in a video game level.
Step-by-step explanation:
As Dennis was watching his friend Mike play a video game to learn how to get past a difficult spot on this level, he missed a critical moment because he looked away when his phone rang. The process that Dennis failed to complete is attention. According to Albert Bandura's theory of observational learning, the correct order of the steps in the modeling process is attention, retention, reproduction, and motivation. Attention is critical because it involves focusing on what the model is doing. In the scenario described, Dennis's distraction prevented him from retaining and subsequently reproducing the specific moves needed to beat the boss in the game. Without paying attention, he could not continue to the next steps, which would involve remembering the observed behavior (retention), executing it himself (reproduction), and wanting to do so (motivation).