Final answer:
Hilda has developed a sense of generativity, as per Erik Erikson's theory, by mentoring a young girl through the Big Brothers Big Sisters program, exemplifying the generative stage of Erikson's psychosocial development stages.
Step-by-step explanation:
According to Erik Erikson, Hilda has developed a sense of generativity by volunteering as a "big sister" in the Big Brothers Big Sisters of America program. Erikson's theory of psychosocial development posits that during middle adulthood, individuals face the crisis of generativity vs. stagnation. Generativity involves the concern for establishing and guiding the next generation, often by parenting, mentoring, or engaging in activities that contribute to the society's well-being. Hilda's active role in providing guidance to her 9-year-old "little sister" illustrates her generative concern for nurturing and positively shaping a young person's growth. It reflects the fulfillment of the seventh stage of Erikson's psychosocial stages, which is characterized by the virtue of care.