Answer:
d. working poor.
Step-by-step explanation:
The working-poor class has an annual income of approximately $25,000. The people in this category have a low minimum wage, and they usually have unskilled jobs. They work in factories or the service industry. People in this category do not have savings since their salaries do not allow them to have them.
Above this category, we have the working class with an annual income of $40,000 and below them is the underclass with an annual income of $15,000.