Answer:
The correct answer is letter "C": Marianna has chosen the correct channel.
Explanation:
Technology has allowed businesses to use different electronic means of communication to fasten most of their processes. However, e-mails, phone calls, or text messages are somehow seen informal. Then, for major situations that could lead to complaints or trials, companies must still use traditional methods of communication such as letters.
Thus, Marianna has chosen the correct channel of communication by sending a letter to a consumer whose warranty has expired explaining the replacement request filed will not proceed.