Function of Imagery: Short Fiction Practice Test

In a short story, a man watches his daughter perform in a school play from the back row. He missed rehearsals because of work, and now he tries to read her face from far away. The narrator describes the stage makeup as "a bright mask that makes her both nearer and stranger". Which choice best explains the function of the bolded imagery?

In a short story, a woman drives past the billboard where she used to see her own face advertising a local boutique. The billboard is now peeled and blank, the frame rusting. The narrator describes it as "a smile with the teeth knocked out". Which choice best explains the function of the bolded imagery?