[单项选择]

Text 2 The topic of cloning has been a politically and ethically controversial one since its very beginning. While the moral and philosophical aspects of the issues are entirely up to the interpretation of the individual, the application of cloning technology can be studied objectively. Many in the scientific community advocate the use of cloning for the preservation and support of endangered species of animals, which aside from cloning, have no other practical hope for avoiding extinction. The goal of the use of cloning to avoid extinction is the reintroduction of new genes into the gene pool of species with few survivors, this ensuring the maintenance and expansion of genetic diversity. Likely candidates for this technique are species known to have very few surviving members, such as the African Bongo Antelope, the Sumatran Tiger, and the Chinese Giant Panda. In the case of Giant Panda, some artificial techniques for creating offspring have already been performed, perhap
A. identify the issues that will not be addressed in the text.
B. reveal an area of interest that will be explored later in the text.
C. identify one of the main issues affecting the cloning controversy today.
D. draw the reader's attention to a sensitive issue that bears consideration in the topic of cloning.