Answer: C. It is an important basis for effective communication
Step-by-step explanation:
Credibility is the quality of being able to be trusted. Can people trust the things you say or promise. That is credibility. It is very important in communication because for one to get their ideas across, the people being communicated to must trust and believe what you are saying. For communication to work, utterances must be able to have an impact and if the person communicating does not have credibility, chances are that the people listening will simply ignore what the communicator is saying simply because they don't believe it to be true.