I knew I could never let Mom hear the messages, because protecting her is one my most important raisons d’etre, so what I did was I took Dad’s emergency money from on top of his dresser, and I went to Radio Shack on Amsterdam. It was on a TV there that I saw that the first building had fallen. I bought the exact same phone and ran home and recorded our greeting from the first phone onto it.
What assumption might the narrator have that supports this inference?
his mother needs protecting.
his mother was lonely.
his mother is strong and independent.