Which statement is the best caption for this image

C. Over time, the U.S. system of dual federalism has been replaced with a system of cooperative federalism.

Explanation:

Dual federalism is also known as layer-cake federalism. It´s a political system in which power is distributed between the federal and state governments in precisely specified terms. State governments use that power without obstruction from the federal government.

Cooperative federalism is also known as marble-cake federalism. It´s a system in which national, state and local governments cooperate and collectively address shared problems, instead of creating policies independently.

aug 15, 2012 - although van leeuwenhoek was not the inventor of the microscope, he advanced it more he loved to grind and focus a new lens in order to see the unseen world. most of leeuwenhoek's microscopes were silver. in a simple but significant experiment (1668), he demonstrated that worms found on

some american cities felt workers were being oppressed by business monopolies