Answer: d. good
Explanation:
Economic conditions in the U.S. directly affect the citizenry and so they will act to vote for a person who will either bring about better conditions if conditions are currently bad, or the incumbent if conditions are good.
If economic conditions are not so great, the person who will be voted for is probably the person who promised more to the people in the way of combating the poor economic performance.
So yes, economic conditions are a good predictor of U.S. presidential election outcomes.
