Read this excerpt from “The Medicine Bag.” As he shook my hand, his coat fell open to expose a bright red satin shirt with a beaded bolo tie under the collar. His get-up wasn’t out of place on the reservation, but it sure was here, and I wanted to sink right through the pavement.

“Hi,” I muttered with my head down. I tried to pull my hand away when I felt his bony hand trembling, and looked up to see fatigue in his face. I felt like crying. I couldn’t think of anything to say so I picked up Grandpa’s suitcase, took his arm, and guided him up the driveway to our house.
Which detail from the text best supports the claim that Grandpa’s surprise visit creates a conflict for Martin?