B. The stones remind the boy...
The speaker does not like the wall. He feels it is unneeded.
A person beliefs and general outlooks, which act like filters on the informations they recieve, is called consideration
Sometimes... when boys insult you, it actually means they like you - but only sometimes! I agree with the answer above. Some boys do annoying things so that they can get your attention. Some boys do annoying things to others so that they can gain acceptance and attention from other more popular boys.