The author's reference in the last sentence of the passage to a society that engineers human beings to fulfill specific roles serves to A. emphasize the potential medical dangers of rDNA technology B. advocate research on the use of rDNA technology in human genetics C. warn of the possible disasters that could result from upsetting the balance of nature D. present Brave New World as an example of a work of fiction that accurately predicted technological developments E. illustrate the sociopolitical ramifications of applying genetic engineering to humans