A 47-year-old man presents for evaluation. In line with Erikson's stages, which of the following may be useful to prevent the onset of stagnation?
a. Compromising ego to ensure a successful romantic relationship
b. Investing time and energy to a local charity that serves youth in the community
c. Joining a clique in an attempt to solidify identity
d. Reflecting on and accepting life, regardless of flaws that occurred