I can't really answer question 3 or 5 due to not seeing the passage or the picture to said passage, but I can answer question 4 for you. I would say the answer to 4 would be a.
Candy replies that he has had the dog for too many years to kill it, but Carlson continues to pressure him
The Irony is that walter says, unless you have money to pay off people in this world, nothing will happen for you.... walter then loses his investment money.....
