To answer the question about the factors that contributed to Yemen becoming a failed state, the following responses should be dragged to the box:
- The rebel group Houthis took control of much of Yemen.
- ISIS took control of parts of Yemen.
The other two responses—"the president of Yemen agreed to allow Turkey to control the country" and "the US forcibly removed the president of Yemen from office"—do not accurately reflect significant contributing factors to Yemen's status as a failed state.