1. I believe sentence (1) to be the objection.
2. Sentence (3) is a counter argument.
a.)mailed a letter to his father
Answer:
Tobacco use is the single most preventable cause of disease, disability, and death in the United States.
Answer:
A successful lawyer, Atticus makes a solid living in Maycomb, a tired, poor, old town in the grips of the Great Depression. He lives with Jem and Scout on Maycomb's main residential street. Their cook, an old black woman named Calpurnia, helps to raise the children and keep the houseAtticus’s wife died when Scout was two, so she does not remember her mother well. But Jem, four years older than Scout, has memories of their mother that sometimes make him unhappy.
Hope this helps!