Final answer:
Both sides of the argument presented to a poorly informed audience and appealing to fears or anxiety can encourage attitude change.
Step-by-step explanation:
The feature of the message that would encourage attitude change is when both sides of the argument are presented to an audience that is poorly informed about the subject. This allows the audience to gain a balanced perspective and consider different viewpoints. It helps them understand the complexity of the issue and make a more informed decision.
Additionally, messages that appeal to the fears or anxieties of the audience can also encourage attitude change. When people feel threatened or worried about something, they are more likely to be open to changing their attitudes or beliefs.
On the other hand, presenting a message simply without a lot of boring statistics may make the message more accessible and easier to understand, but it is not necessarily a guarantee for attitude change. Lastly, allowing the audience to determine what conclusions should be gained from the message can be empowering, but it may not necessarily lead to attitude change.