Plz help me answer these all questions plz

I’m not sure if you have to use the EXACT sentences listed but I stuck to them pretty well...

Peter is a very kind boy, not only to people, but also to animals. He always feeds the stray dogs in our neighborhood with his own pocket money, and he gives his lunch to street children, even though he is skinny and needs the food; he values others over himself. One day the boy saw many homeless people on the street and, feeling bad for him, gave his father’s wallet to an old man among them. The man recognized the photograph of his old friend Peter’s Father’s ID card, and immediately used it to locate Peter and his dad. They had a happy reunion where Peter’s dad offered food and clothes to his old friend, and in turn the old man began telling many stories of his travels, which amused Peter. When he left, the Father punished Peter, but not too strictly; he was both annoyed and happy with Peter’s actions. Although it turned out well this time, he was afraid of Peter doing this again, so he scolded him sharply and told him never to give away his wallet again. Afterwards, Peter’s father kept in touch with his old friend, and they both would laugh over dinner about their strange reunion; a reunion brought about by the misguided kindness of a boy.

  i think it is   b because it to subject