Jasmine was terrified about having to speak in front of an audience. She was certain that

everyone in the audience would see how her hands were shaking or hear how nervous her
voice sounded.

She worried that people would laugh at her.  She was surprised when, after
the speech, her classmates complimented her on how confident she seemed.  Jasmine?s
problem was that
A)  she had not practiced her speech enough before class.
B) she had not stretched her comfort zone.
C) she had not used visual imagery.
D) she had been overconcerned about how her audience would respond.

D