Answer:
Martin puts his head down and tries to pull away his hand
Step-by-step explanation:
From the book, The Medicine Bag, Martin is unsettled with Grandpa's visit and is even more embarrassed with the medicine bag that was given to him.
As a result of this, Martin is uncomfortable with Grandpa's visit and it stirs up a conflict in him so he put his head down and tries to pull away his hand.