How does the CENTRAL idea that damaged soil caused the downfall of agrarian societies in the past affect the CENTRAL idea
that immediate action is required to preserve Earth's soil for the future?
(A)
(B)
(C)
(D)
It provides support by referring to a situation in which failure to care for soil had a significant impact on
the population in that area.
It provides support by explaining the potential benefits that conservation of soil could have on the
world's agrarian economies..
It offers a contradiction by suggesting that humans can counteract the damage they have inflicted upon
the soil in the past.
It offers a contradiction by indicating that societies will not be as reliant on agriculture in the future as
they were in the past.