Which of the Following Is Not an Example of Adaptation

Which of the following is not an example of adaptation?

A) A plant population that is very drought-resistant due to the action of natural selection
B) The process by which a plant population becomes drought-resistant
C) The increased ability of an individual plant (above baseline) to withstand further drought after it has received a heat shock, which causes the expression of specific proteins that enable more efficient use of water
D) A mammal species that has evolved an increased ability to store water through the operation of natural selection
E) A mammal species that has evolved measures to use water more efficiently through the operation of natural selection