While going through some of your grandparents' belongings, you found a few old photographs. You asked about them, and your grandfather shared that those were pictures of his grandmother when she was younger. She was the first person in your family to immigrate to the United States. You ask if you can keep the picture, and you decide to frame it and display it in your home. This photo serves a$($n$)\_\_\_\_.$ a$.$ reflexive evaluation b$.$ connectedness function c$.$ role acquisition function d$.$ expressiveness function