The thesis statement is usually the what the author is trying to say. Most likely it’s at the end of the introductory paragraph
Pros: Tradition keeps cultural heritage and knowledge alive, and keeps it passed down to future generations
Cons: Traditions can have outdated views that involve oppressing or censoring the rights of certain groups.
Answer:
At the zoo, the Dursleys spoil Dudley and his friend Piers, neglecting Harry as usual. In the reptile house, Harry pays close attention to a boa constrictor and is astonished when he is able to have a conversation with it. Noticing what Harry is doing, Piers calls over Mr. Dursley and Dudley, who pushes Harry aside to get a better look at the snake. At this moment, the glass front of the snake’s tank vanishes and the boa constrictor slithers out onto the floor. Dudley and Piers claim that the snake attacked them. The Dursleys are in shock. At home, Harry is punished for the snake incident, being sent to his cupboard without any food, though he feels he had nothing to do with what happened.