Question

Please help. There is a strong positive linear correlation between the number of rainy days and the number of grapes produced on a grape plant. Does this mean that more rainy days cause the grape plants to produce more?

Answer 1

A strong positive linear correlation between the number of rainy days and the number of grapes produced on a grape plant, implies that: 
The more the rains the more the number of grapes produced per plant. Hence the answer is:
A] Yes. Since the number of rainy days and number of grapes produced are linearly correlated, this means a greater number of rainy days causes the grape plants to produce more.