Final answer:
The estimated percentage of single, divorced, or widowed women age 65 and older living in poverty in 2010 is 20%. This estimate reflects the higher poverty rates typically seen among female demographics and the reported rise in the national poverty rate among the elderly.
Step-by-step explanation:
In 2010, the correct answer to the question 'In 2010, ___ percent of single, divorced, or widowed women 65 years and older lived in poverty' is B) 20%. This is based on the information from the Kaiser Commission on Medicaid and the Uninsured, which states the national poverty rate among the elderly had risen to 14 percent by 2010. However, considering the historical context of poverty among single, divorced, or widowed women and the feminization of poverty, which suggests that these demographics are at a higher risk, the poverty rate for these groups of elderly women would likely be higher than the average for all elderly people. Without a specific reference to the exact percentage for these women, the best estimate given the options would be 20%, acknowledging that poverty rates for females are generally higher.