students go to college in their teens every year. A. A plenty of B. A good many C. A great deal of D. A lots of

Lots of students go to college in their teens every year

unless you are going formal and would use 'plenty of'

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.