Final answer:
d) George Copway is proud of his heritage and ashamed of the way Christians have treated his people.
Step-by-step explanation:
The passage does not explicitly state which of the inferences can be made about George Copway's feelings about his heritage and Christianity.
However, based on the information provided, it can be inferred that George Copway is proud of his heritage and ashamed of the way Christians have treated his people.