The primary purpose of the passage is to A. illustrate an organism's functional adaptive response to changing environmental conditions B. prove that organisms can exhibit three basic adaptive responses to changing environmental conditions C. explain the differences in form and function between micropterous and macropterous water bugs and analyze the effect of environmental changes on each D. discuss three different types of adaptive responses and provide an example that explains how one of those types of responses works E. contrast acclimatory responses with developmental responses and suggest an explanation for the evolutionary purposes of these two responses to changing environmental conditions