Lester Has a Fear of Public Speaking

Lester has a fear of public speaking.As a result,he visits a cognitive therapist.The therapist asks him to imagine a situation that involves speaking on the stage and then equips him with the requisite skills to deal with such situations in an effective manner.According to this information,which of the following cognitive therapy techniques has been implemented by Lester's therapist?

A) fantasizing consequences
B) examining advantages and disadvantages
C) challenging idiosyncratic meanings
D) guided association