What does the term "insuperable" mean?

The term "insuperable" is defined as something that cannot be overcome or surpassed. This means that when a challenge or obstacle is insuperable, it presents a level of difficulty that is beyond what can be managed or resolved. In this context, the correct choice accurately reflects the inherent meaning of "insuperable," which conveys a sense of permanence and difficulty that one cannot easily navigate.

The other options present meanings that do not align with the true definition of "insuperable." For instance, stating something is capable of being overcome directly contradicts the meaning, as does suggesting it's incipient or immovable, both of which imply different states that can be managed or altered. Thus, the choice indicating the incapacity to be overcome aligns perfectly with the essence of "insuperable."