Final answer:
An actively metabolizing organism is able to reach equilibrium by adjusting its metabolic pathways to maintain homeostasis. The correct option is 1) one that is actively metabolizing
Step-by-step explanation:
An organism that reaches equilibrium in terms of metabolism would likely be one that is actively metabolizing, as living systems must continually manage their internal environment to maintain homeostasis.
Actively metabolizing organisms can adjust their metabolic pathways to respond to changes in their environment, thus reaching a balance or equilibrium. While all organisms need energy for life processes and maintain a stable internal environment, it is the active metabolic processes that enable organisms to achieve equilibrium. The correct option is 1) one that is actively metabolizing