The correct answer is D) Becket bend. The becket bend is the appropriate knot to tie a small line to a larger one. This knot creates a secure connection between the two lines, allowing the smaller line to be attached to the larger one. The becket bend is a reliable and commonly used knot for this purpose, as it provides a strong and adjustable connection. The other answer choices are not the best options for this task. The lark's head and clove hitch are more suitable for attaching a line to an object, while the bowline is primarily used to create a loop at the end of a line.