With the evolution of technologies such as cloning, scientific community leaders mandate that researchers consider the ethical questions associated with their field of development, as it is a part of their professional responsibility.


consider the ethical questions associated with their field of development, as it
considering the ethical questions associated with their field of development, doing so
have considered the ethical questions associated with their field of development, as to do so
consider the ethical questions associated with the field of development, as doing so
consider the ethical questions associated with their field of development, as to do so

OA E

In this case I chose D because I thought "as to do so" in this context was incorrect and doing so was more appropriate. Can someone pls explain this?