What must Brazilian street children do to survive according to Hecht?

The correct answer highlights the reality that Brazilian street children often resort to begging and working in order to survive. Hecht's research focuses on the harsh conditions faced by these children, emphasizing that many lack access to basic resources such as food, shelter, and education. As a result, they engage in various forms of labor, which can include street vending, collecting recyclable materials, or other informal work, alongside begging, to meet their immediate needs.

The other options present alternatives that do not align with the context of survival for street children. Attending school full-time is often not a feasible option for these children due to the pressures of their circumstances, such as economic hardship and the necessity to earn money. Similarly, living in foster care is not a common solution for street children in Brazil, as many come from unstable family situations that may not allow for such arrangements. Joining a community program could provide some support, but it is not a primary means of survival given the urgent need for income and basic necessities faced by these children on the streets.