Final answer:
Option B best reveals June's frustration with her mother, as it shows the emotional impact of her mother's disappointment.
Step-by-step explanation:
The piece of evidence that best reveals June's frustration with her mother is option B: "And after seeing, once again, my mother's disappointed face, something inside me began to die." (Paragraph 18). This statement directly reflects the emotional impact her mother's disappointment has on her, leading to an internal sense of loss and frustration. In contrast, option A reflects ambition and hope rather than frustration, option C represents a direct confrontation without explicitly stating her frustration, and option D speaks to a sense of pride rather than frustration.