Answer:
T.J.'s relationships show the difference between true friendship and false friendship.
B. <span>"No beggars implored him to bestow a trifle, no children asked him what it was o'clock, no man or woman ever once in all his life inquired the way to such and such a place, of Scrooge."
This shows us how all people he saw on the street would stay out of his way and wouldn't bear talking or even looking at Scrooge.</span>
If i remember right the technique is something related to descriptive detailism (sorry if it isnt a word)
True I believe :) Hope this helps!