Final answer:
A dog trainer should discuss options and work together with an owner with limited mobility to ensure effective training.
Step-by-step explanation:
A dog trainer should handle an owner with limited mobility by discussing a variety of options and agreeing on how to best work together. This can include adjusting training techniques, modifying exercises or activities, and providing additional support or assistance. The goal is to ensure that the owner can effectively participate in the training process and that the dog's needs are met.