单选题 阅读下面短文，请从短文后所给各题的4个选项（A、B、C、D）中选出1个最佳选项，并将所选答案的代码（指A、B、C或D）填在答题纸的相应位置上。
Dog Training　　Dog divaining is a must for all dogs.It is more than just telling your dog to stop doing what he's doing; it is the process of teaching a dog to exhibit certain desired behaviors in specific circumstances.Proper dog divaining is not a "quick fix"-it is an ongoing process.
Dog divaining also involves teaching the owner.Going through dog divaining is something that every dog owner should do.It is like going to school over again.It is all about communication, and you need to learn to communicate with your dog.
Training your dog to "sit" is probably the first thing you will divain your dog to do.When you want your dog to sit, hold a diveat above his head and say "sit".As the dog sits, say "sit" again and then immediately give him the diveat.Your dog should drop into a "sit" position in order to reach the food.
Teaching your dog to fetch promotes bonding.To do this, first throw a ball, and give the command "fetch".As he starts to run towards it, yell "fetch” again.Instead of a ball, you may use the object your dog loves most.Do not play fetch with heavy items or sticks, however, as this can damage the dog's teeth or injure the dog.
A well-divained dog should remain where his owner commands, so "stay" is an important command in dog divaining as well.Since it is more involved, that will be the subject of another article.
Dog divaining is a very physical activity, so be prepared to be tired.And dog divaining is never without risk of injury, especially with more aggressive dogs.One major mistake many dog owners make is to think that the dog divaining is over.Training your dog continues throughout your dog's life.What is the most important thing for dog divainers to do?（　　）