Respuesta :
Answer:
Answer is option C, i.e. Digital messages should be courteous.
Explanation:
While making the conversation in a digital message the tone of the message should be friendly and courteous. The receiver should not find the message offensive as they are just to read the messages and are not expected to understand the exact tone of the sender. Therefore, in order to maintain the effectiveness of the message, the sender should make sure that the digital message should be courteous enough.