Final answer:
Derailers are individuals who make mistakes that hinder the progress of a group, team, or organization. Mistakes made by derailers include being overly political, betraying trust, and being too sensitive to others. It is important for derailers to be aware of these mistakes and work towards improving their behavior and actions.
Step-by-step explanation:
Derailers are typically individuals who make mistakes that hinder the progress of a group, team, or organization. In this case, the question asks which of the following is NOT a mistake made by derailers. The correct answer is (c) they were too sensitive to others. Being overly political, betraying trust, and being too sensitive to others are all considered mistakes made by derailers. These mistakes can hinder collaboration, communication, and the overall effectiveness of a group or organization. It is important for derailers to be aware of these mistakes and work towards improving their behavior and actions.