What is the meaning of 'tractable'?

The term 'tractable' refers to something or someone that is easily managed, controlled, or taught. When used in various contexts, it conveys a sense of flexibility and compliance, suggesting that the subject in question can be directed or influenced without considerable difficulty. For example, a tractable student is one who learns quickly and adapts well to instructions, while a tractable problem would be one that can be solved with relative ease.

The other options highlight qualities that are contrary to the essence of 'tractable.' Difficult to manage implies challenges and complications, while unwilling to change suggests a resistance to adaptation. Highly complex or involved points to intricacies which would not align with the straightforward nature inherent in something that is tractable. Thus, the meaning encapsulated in option C aligns perfectly with the definition of 'tractable.'