Fast food consumption is linked to high income." It is justified. It does not make a cause-and-effect statement. The headline is not justified. A better headline is "Fast food consumption increase income." The headline is not justified. A better headline is "Study find more fast food locations in high income neighborhoods." The headline is not justified. A better headline is "Wealthier individuals eat fast food 5 times a week." The headline is not justified. A better headline is "High income tied to increase in fast food consumption