Which are the three types of carabiners listed?

• A. screw gate, auto lock, super safe
• B. screw gate, auto lock, standard
• C. twist lock, auto lock, standard
• D. lock gate, auto quick, lightweight

Answer: (A)

Carabiners are classified by how their gates lock, which is a key safety feature in rope work. The three types shown here—screw gate, auto lock, and super safe—cover the common locking styles you’ll encounter: screw gate requires manual threading to lock, auto lock uses a built-in mechanism to lock automatically, and “super safe” is a branded or descriptive term used to denote a higher-security locking model. Together they represent the typical categories used in rope-training materials, which is why this combination is the best fit for the question. Other options mix terms that aren’t standard three-type groupings (for example, terms that aren’t recognized as locking categories or describe weight/style rather than the locking mechanism), so they don’t align as neatly with how carabiner types are taught.