When did Martin’s feelings toward his grandpa change? after his sister’s friends continue to come and talk with Grandpa
after he undresses Grandpa and helps him recover from his journey
after he puts sage in the medicine bag
after Grandpa impresses Martin’s friends with his stories and dress

after Grandpa impresses Martin’s friends with his stories and dress

Explanation:

I am not copying the other person . This is the answer because at first he was  emerassed of his grandpa because of the the way he looked . He didn't like the indians on tv  and in movies  

a was not the right answer