3. Traffic signals at expressway on-ramps use lights.
A. yellow and green
(B. yellow and red
C. red and blue
D. red and green

red and green

Explanation:

the answer is: round.

in literature, round characters are considerably complex and experience or are subjected to unpleasant situations. as a consequence, they go through crucial sentimental and psychological development, which can cause surprise in the readers. in this case, juan's dramatic transformation is related to the adversities he meets at school.