The Federal Reserve Board in the United States and the Bank of England in the United Kingdom regulate the money supply to ______ their respective economies. (stable)

A．so the training of journalistic interviewers has likewise been strengthened
B．though the study of the interviewing techniques hasn’t received much attention
C．but journalistic interviewing as a specific field has unfortunately been neglected
D．and there has also been a dramatic growth in the study of journalistic interviewing