Event I: Ice-cream sales in the town rose sharply this week. Event II: Demand for electricity for fans and air-conditioners rose sharply this week. Which option best describes the relationship between the two events?
Correct answer D. Both events are effects of a common cause
Explanation
Neither event causes the other. Both are typical results of very hot weather, which makes people buy cold food and run cooling appliances, so they share a common cause.
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