Final answer:
Mel's nonjudgmental comments help create and support group cohesion by holding members accountable in a neutral way and building trust and support among group members. Therefore the correct answer is A. Her nonjudgmental comments are a neutral way of holding members accountable.
Step-by-step explanation:
Mel's success in creating and supporting group cohesion is likely due to her nonjudgmental comments. By choosing her words carefully and ensuring her comments are nonjudgmental in nature, Mel is able to hold group members accountable in a neutral way. Her comments show that she is paying attention to the group and its dynamics, which helps to build trust and support among group members. This creates a safe and inclusive environment where members feel comfortable expressing themselves and working together to resolve conflicts.