Which situation shows causation?
When the number of people in a bus increases, the number of animals in a zoo also increases.
When the number of hours worked each week by an hourly employee decreases, the amount of money earned
by the employee also decreases.
When the amount of a discount for a sale increases, the number of items sold during the sale decreases.
6 When the number of bike trails in a city decreases, the amount of rainfall in the city increases.