Which one of the following systems is true regarding paragraphs?
a) a paragraph with two main topics is called a complex paragraph.
b) the topic of the paragraph always placed in the first sentence.
c) a topic sentence should not placed in the middle of a paragraph.
d) a paragraph should have one main topic.

Han put the last box into the back of his car and turned to look up at his dorm room. he saw himself through the window, laughing with his roommates and sharing his hopes and dreams. he saw all of the hours spent studying and the celebrations at the end of each semester. he smiled fondly as he turned away, got into his car, and drove off. which literary element does the passage contain?