It’s a sentence fragment Because a sentence fragment will start with with a capital letter and end with a punctuation; however it is neither an independent clause nor a complete idea. Example. Sarah slammed the door and left.
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.