Final answer:
The helping skill used by counselors who apply complete thinking, feeling, and behavior towards clients is empathy. Empathy is the ability to understand and share the feelings of another person.
Step-by-step explanation:
The helping skill used by counselors who apply complete thinking, feeling, and behavior towards clients is empathy. Empathy is the ability to understand and share the feelings of another person. It involves being supportive, non-judgmental, and seeing things from the client's perspective. Empathy helps counselors establish rapport and build trust with their clients, which is crucial for effective counseling.