Final answer:
Mr. Warren's statement that his will has been ready for a long time suggests he may be experiencing the crisis associated with Erickson's last stage of development.
Step-by-step explanation:
The statement by Mr. Warren that would suggest he might be experiencing the crisis associated with Erickson's last stage of development is D. 'My will has been ready for a long time, so my wife will be taken care of.' According to Erikson's psychosocial stages of development, in the final stage of late adulthood, the challenge is to embrace integrity over despair. Individuals who feel a sense of integrity can look back on their lives with few regrets, while those who are not successful at this stage may feel that their lives have been wasted.