Which knot is used to secure a rope around a post?

The clove hitch is the correct knot to use for securing a rope around a post because it effectively provides stability and holds the rope in place. This knot is designed to distribute tension evenly when tied around cylindrical objects, such as poles or posts, making it ideal for securing or fastening items in various applications, including in construction and rigging.

The clove hitch is particularly useful because it is quick to tie and can be easily adjusted; it will hold under load but can also be released easily when needed. This flexibility allows for a secure connection that can accommodate movement or tension changes.

Other knots, such as the figure eight knot, while strong and reliable, are primarily designed for creating a fixed loop or stopping a rope from slipping through a device. The trucker’s hitch is excellent for creating a mechanical advantage for heavy loads but is not typically used for securing a rope around a stationary object like a post. The lead knot isn't commonly recognized or used in practical applications compared to the above-mentioned knots. Thus, the clove hitch stands out as the most suitable choice for this specific context.