What is the purpose of locking carabiners in climbing setups, and where should they be used?

• A. Locks are decorative and unnecessary in any setup.
• B. Locking carabiners provide resistance to bending loads but not to opening.
• C. Locks prevent accidental opening; use on belay loops, anchor connections, and any point where a non-locking carabiner could accidentally open.
• D. Locking carabiners are only for use in rescue scenarios.

Answer: (C)