One Study Tested How People Responded to Messages That Varied

One study tested how people responded to messages that varied with regard to level of certainty about the risks of climate change. The researchers found that

A) all participants were more persuaded by messages high in certainty.
B) all participants were more persuaded by messages high in uncertainty.
C) level of certainty did not affect how the messages were received by participants.
D) whether level of certainty affected participants perceptions of the message depended on how the participants viewed science.