Each of these relationships reflects a correlation. Which relationship most likely reflects both correlation and causation?

Question

a) for dog walkers, walking more labradors is associated with walking more huskies
b) for dog boarders, boading more dogs is associated with feeding more dogs
c) for dog groomers, trimming more nails is associated with using more dog shampoo

Answer 1

b) for dog boarders, boarding more dogs is associated with feeding more dogs