Final answer:
The best word to describe Coach Bob Stanton's reaction to his team's loss cannot be determined without additional context from the text.
Step-by-step explanation:
Without context or an excerpt from a text to refer to Coach Bob Stanton's reaction, it is impossible to accurately determine which word would best describe his reaction to his team's loss. In literature, character reactions can range from disappointed, frustrated, philosophical, and reflective, to optimistic, among others. If provided with a specific description of Coach Stanton's behavior or dialogue after the team's loss, a more informed and accurate word to describe his reaction could be given.