Which of the following is NOT related to the meaning of "inert"?

The term "inert" refers to a state of being inactive or lacking the ability to move. It conveys a sense of stillness or a lack of action. Therefore, the correct answer, which is "active," stands in opposition to the meaning of "inert."

In contrast, the other choices describe states that align with the definition of "inert." "Inactive" directly suggests a lack of activity, which fits the concept well. "Motionless" describes a condition of not moving, reinforcing the idea of being inert. "Static" implies a state of stability or lack of change, which corresponds with the essence of being inert. Each of these options reflects characteristics that are synonymous with inactivity or stillness, distinguishing them from "active."