Sheep and monkeys are some of the mammals that have been successfully cloned. In the future, cloning may be a very important way to reproduce animals that are endangered. It may also be useful way to reproduce animals that can be used for food in underdeveloped countries. However, cloning humans raises many questions. If you clone a 40 year old man, what do you have when the clone of the man reaches 30? A 30 year old clone of a 40 year old? Or, a 40 year old clone of a 30 year year old? Also, how much of human behavior is genetic and how much is enviromental? Experts disagree on the answers. Though studies have been done on identical twins separated at birth, we are far from having definitive answers.
If the above discussion is true, it is a reason for accepting which of the following statements? A) The argument that cloning of mammals should continue
B) The argument that cloning of mammals should not continue
C) The argument that cloning of mammals should continue, but experiments leading directly to cloning of humans should be stopped
D) Some stereotypical behavior is unique to all mammals
E) Some stereotypical behavior is not unique to all mammals
Source: Nova GMAT
Difficulty Level: 700