Final answer:
The cardholder yelling about their bill is not demonstrating effective communication, which involves respectful and clear exchange of information. Yelling suggests hostility and may prevent constructive problem-solving.
Step-by-step explanation:
The statement that a cardholder who is yelling about their bill is demonstrating effective communication is false. Effective communication involves clarity, respect, listening, and a level of calmness that allows both parties to exchange information without confrontation. Yelling can imply that the communication is hostile and not open to understanding or problem-solving, which may hinder the resolution of the issue at hand. Instead, effective communication would involve the caller explaining their concerns in a respectful and clear manner, and the receiver of the call listening actively and responding with helpful information.