Women who were physically fit in their middle ages were __ __ % less likely to to develop dementia than their peers who were only moderately fit

Nearly 90 percent

Explanation:

Women with high physical fitness at middle age were nearly 90 percent less likely to develop dementia decades later, compared to women who were moderately fit.

This was discovered according to a study published on the 14th March,2018 on an online medical journal of the American Academy of Neurology.

answer; ///i believe the correct answer is (b) the writing of the ancients who lived in india after the indus valley inhabitants died out;