Which of the following is an example of Class 3 knots?

Class 3 knots are typically used to create loops in rope or line that can bear weight and maintain integrity under load. The Figure 8 loop is designed specifically for this purpose, as it forms a secure loop that can be easily untied after being loaded, which is critical in situations such as climbing or rescue operations. Its design includes a backtrack movement which prevents the knot from slipping, making it reliable even under tension.

On the other hand, while the other options may serve various functions, they do not provide the same level of structural integrity and security for weight-bearing situations. The around the body bowline, clove hitch, and three loop bowline, although effective in different contexts, do not classify as Class 3 knots due to their differing designs and intended uses. Thus, the Figure 8 loop stands out as the most appropriate example of a Class 3 knot.