Read these lines: "This man had saved his life, which was something; but, further, he was the ideal master. Other men saw to the welfare of their dogs from a sense of duty and business expediency; he saw to the welfare of his as if they were his own children, because he could not help it." What sets this man apart from the others?

1. 1. The quoted lines set up a contrast between other men and this one. 2. 2. Other men act from a sense of duty and from business expediency, which are outside reasons. 3. 3. He acts as if the dogs were his own children, and because he could not help it, which is an inward reason. 4. 4. The difference is therefore the motive, not the amount of care, so the first option is right. 5. 5. Numbers of dogs and weight of loads are never compared in these lines. 6. 6. Hired help would be another outside arrangement, which is what the contrast rules out. _Source: The Call of the Wild by Jack London (1903)_