The correct answer is B. Anxious
Step-by-step explanation
Anxiety is a natural defense mechanism of the body against external or internal stimuli that are perceived by the individual as threatening or dangerous and is accompanied by an unpleasant feeling or somatic symptoms of tension. In this text, Diana most likely feels anxious because she was scared about the exam, and the reason for this was that if she did not pass the exam, she would have to work in another bakery. So, the correct answer is B. Anxious.