You searched for: “tractability
tractability (s) (noun), tractabilities (pl)
1. The ability of being easily managed or controlled; docile; yielding: Little Susi was known for her tractability, because she was easily persuaded to help in the kitchen if she could watch TV afterwards!
2. The capacity of something which can be easily worked, shaped, or otherwise handled; malleable: The tractability of the clay to make a vase proved to be effortless to knead and form.