The graph shows changes in life expectancy in the United States over a fifty-year period. What challenge arose as a result of the trend shown above?
A. educating millions of school-age children
B. providing medical care for an aging population
C. keeping people from leaving the country to retire overseas
D. offering easy-to-follow voting registration procedures

I believe the answer would be "B"

Explanation: if you're able to provide better medical care for the aging population then they can live longer therefore the more aging people treated the higher the life expectancy is

I think it is --- providing medical care for an aging population

Explanation:

The question is asking about challenges that came from life expectancy rising, with a longer life expectancy there's going to be an aging population. the other options are don't really fit as we're talking about old ppl not children, old ppl will have already been registered to vote

it will be innate immunity. good luck with your test : )!

oh and if you need . ask the question

ba geologist finds four sedimentary rock she determines that no geologic events have shifted the layers she labeles them a,b,c,dbfrom top to bottom