Which is the odd one out:

The Department of Health has established a guide to Communicating About Risk to Public Health which suggests that:

a. messages are usually judged first by whether their source is trusted;

b. intentional communication is often only a minor part of the message actually conveyed;

c. responses to messages depend not only on content but also on the manner of delivery, especially emotional tone;

d. all messages are accepted if they seem plausible;

e. experts no longer command automatic trust, no matter how genuine their expertise, trust is generally fostered by openness, both in the sense of avoiding secrecy and in being ready to listen.