Question

Around age 85, a life expectancy crossover occurs in that

Answer 1

I believe the answer is: A. surviving members of low-SES ethnic minority groups live longer than members of the white majority.

Surviving members of low SES status tend to live in poor unhygienic neighborhood with little access to proper nutrient.
But, if these people survived until the age of 85, it indicates that their body possess a great capabilities of self-protection/repairment, which help them to elongate their ife span.