Which of the following best describes a non-walk-in pit?

A non-walk-in pit is best described as a pit with an access point above floor level. This means that individuals cannot simply walk into the pit from the surrounding area because the entrance or access point is elevated, requiring them to use equipment such as ladders or platforms to enter. This design is often implemented for safety reasons, to prevent unauthorized access or to minimize potential hazards associated with walking directly into the pit.

The other descriptions imply different aspects of pits, such as requiring equipment or concerns about safety, but the key defining characteristic of a non-walk-in pit revolves around its access point being situated above the floor level, which distinguishes it clearly from other types of pits that may not have this feature.