Which knot is known for being used to secure lines to a post and can be released quickly?

• A. Slip knot
• B. Clove hitch
• C. Bowline
• D. Square knot

Answer: (A)

Quick-release ability when securing a line to a post is the key idea here. The slip knot fits that need because it wraps around the post and tightens with tension, yet can be released quickly by pulling the free end so the line can be freed without a lengthy untying process. This makes it a handy temporary fastening on decks or posts where you want to let go fast. A clove hitch ties quickly and holds around a post, but under load it can slip or bind and releasing it cleanly isn’t as straightforward as with a slip knot. A bowline creates a secure loop around the post and is easy to untie after loading, but it isn’t the quickest release when you need to let go right away. A square knot is used for joining two rope ends, not for securing to a post, so it isn’t suitable here.