What Is the Most Important Reason to Improve the Communication

What is the most important reason to improve the communication skills of health care professionals

A)  Patients often do not speak English, and this prevents them from seeking health care. 
B)  Physicians with excellent communication skills are particularly proficient in the use of medical jargon. 
C)  Patients who understand their instructions and feel that their doctors interact with them in a positive manner are more likely to comply with health care advice or instructions. 
D)  The better the communication skills of the health care provider, the faster patients can be treated.