Devon is writing a report about keeping dogs happy and healthy. He will collect information about dogs' health from many different sources. One will be an interview with a dog walker. The dog walker would NOT be the correct source to answer which of these questions?
A) Why is walking an important exercise for dogs?
B) What qualities make a person an effective dog walker?
C) What type of dog food has the best nutrition for dogs?
D) Where are good places to take dogs for a walk?