Which is not a function of a survival knife?

A survival knife typically serves several essential functions that assist individuals in emergency situations, primarily focusing on tasks related to survival. Among these functions is the capability to cut rope, which is crucial for a range of applications including setting up shelters or securing gear. Additionally, a survival knife can be instrumental in cutting through entanglements, particularly in scenarios where someone may be trapped by fishing lines, vines, or other materials that pose a risk.

Self-defense is another recognized use of a survival knife, wherein it can provide personal protection in threatening situations. However, the option of reaching high places does not align with the intended design or function of a conventional survival knife. This tool is not constructed for reaching upwards; rather, it is meant for more ground-level, practical tasks.

Consequently, the function of reaching high places does not belong to the primary purposes of a survival knife, differentiating it from the other valid uses. Understanding these functions is crucial for effective use during survival situations, emphasizing the importance of selecting the right tool for specific tasks.