Responding to the environment by maintaining a stable internal environment despite changing external conditions is
.

I believe the most VALID answer to your question is "Homeostasis".

Organisms that carry out homeostasis do so in order to maintain a constant, optimum environment for the cells within their body.

do yall know the answer?

i think that is new experiments yield untrustworthy data and should be carefully considered, because you don't know what will happen with the experiments.