Final answer:
A high standard of counseling practice involves acknowledging biases and adapting to clients' needs, but not treating all clients the same way.
Step-by-step explanation:
The high standard of counseling practice when working with diverse populations involves all of the following except treating all clients the same way. Treating all clients the same way can overlook the individual needs and experiences of different cultural groups. Instead, counselors should acknowledge and confront their own biases and prejudices, adapt their knowledge and skills to meet the clients' needs, and educate themselves as completely as possible regarding the clients' cultural context.