What evidence supports the idea that the narrator’s motivation is intrinsic? "Last week I sent a tuner over to my parents’ apartment and had the piano reconditioned, for purely sentimental reasons." "My mother had died a few months before and I had been getting things in order for my father, a little bit at a time." "I put the jewelry in special silk pouches. The sweaters she had knitted in yellow, pink, bright orange—all the colors I hated—I put those in moth-proof boxes." "I found some old Chinese silk dresses, the kind with little slits up the sides."