Answer:
The stones symbolize the boy's journey to his true self, giving him the strength to continue working toward his goal.
Explanation:
The stones are the way that he is reminded to continue on his journey to find himself. They answer 'Yes' and 'No' and are particular sign to the character to follow the signs and/or omens that are presented to him.
You need a sentence with those specific words in it or using words that fit those characteristics?
I can not describe Hoopers character as revealed if I do not know what you are reading.
The answer is A. Hope this helps!