Answer:
The author or the poet of "On Turning Ten" includes the "childhood fantasies", such as "being invisible or a prince", in order to show a contrast between the playfulness and the days with which one becomes more serious.
The correct option here would be option C.
Step-by-step explanation:
Billy Collins in his poem “On Turning Ten,” focuses on the struggles of growing up that any person has to go through when they come of age. The poet dreads about turning ten and wishes to have a list of illnesses as an alternative.