Answer:
Spending money is not always an option.
Step-by-step explanation:
Theme is the subject to be developed in the text. In this text the theme is "Spending money is not always an option". This can be proven by the text, when the mother, who was licking the envelope to pay the house, asks if her son thinks that money is born in a tree, when he asks for braces. That is, spending money is not always an option because, somentimes, people only have enough money to pay bills.