Answer:
The argument is not sound; the author uses an either-or argument.
Explanation:
"If your work is first with you, and your fee second, work is your master."
At first the people does not bluntly show gratitude to Jim, they treat what he does as his work which does not need gratitude. Later on, they learned that they must thank him for his work even if he gets paid for doing it. They should still show gratitude to him, this boosts his morale and will make him enjoy his work more.
