According to this article:
I think that d) is the best answer.
"Pecks three developmental tasks for older adults are (1) differentiation versus role preoccupation, (2) body transcendence verses preoccupation, and (3) ego transcendence versus ego preoccupation."
An example of (1) would be my redefinition of myself after retirement as an eccentric recluse
, rather than as a water / wastewater laboratory technician.
An example of (2) would be an acceptance of my physical limitations due to aging. This is what d) is describing.
An example of (3) would be accepting that death is inevitable, and looking at your life's accomplishments in a positive manner. The article gives the example of raising children who love you, and are productive citizens. Based on this, c) seems to be incomplete.
So what is the correct answer?