Barbara and her children live in poverty. They represent the feminization of poverty.
Women's lazy attitude toward working is definitely not the correct answer and it is really offensive, to be honest. A small group of women who live in poverty is also incorrect because there are a lot of women who live in such conditions. A group that is socially and politically active doesn't really make sense here. This means that the feminization of poverty is the correct answer, and it refers to the fact that "the burden of poverty is borne by women" mostly.