The answer is C, a conflict can be described as a roadblock or something stopping someone from reaching their goal. In this example she wants to bake cookies, her roadblock or setback is that her oven is broken. No other options illustrate a conflict.
A. Character, setting and theme can be compared and contrasted in Shakespeare's Romeo and Juliet and Julius Caesar.
echo, reverberated
D. The starlit balcony of the Capulet garden sets the scene for romance, while the stark marble of the senate steps creates a stiff, political setting.