The Top-Flite salesperson calls on a sports equipment retailer and describes his company's new golf balls as having "titanium in the cover to create explosive distance" and "tungsten in the core for amazing control on the greens". The retailer does not understand why the golf balls have tungsten in their core because he is not a golfer himself. In terms of the communication process, this represents a problem with:
A. source context.
B. encoding.
C. the medium.
D. decoding.
E. the message feedback.
Answer: D. decoding.