Correct answer: A). Ancestry
The environment includes everything that is found around us. It may be living or non-living. It involves chemical, physical and natural forces. The living organism lives in the environment and they continuously interact with each other and may adopt their-self according to the environment they live.
Ancestor is those from whom a person is descended, it may be on the father side or mothers side, a forefather.
Hence, ancestry is not a part of organisms environment.