Which technique entails foot techniques?

The technique that entails foot techniques is Jok Ki. This term specifically refers to a variety of kicking techniques in martial arts, where the emphasis is on the use of the feet for striking. Jok Ki encompasses various approaches and styles of footwork, highlighting the importance of kicks in Taekwondo.

In contrast, the other options present different techniques that are not primarily focused on foot techniques. For instance, Dwi Cha Ki translates to "back kick," which, while it uses foot techniques, is distinct in its specific application and isn't a general term for all foot techniques. E Dan Dwi Tollyo Cha Ki, meaning "jumping back roundhouse kick," also emphasizes a specific type of kick rather than the broader category of foot techniques. Lastly, Hu Bae refers to "stepping back" or retreating techniques, which involve footwork but are more focused on defensive movements rather than attacking foot techniques.

Jok Ki, therefore, is the most comprehensive term related to the study and application of foot techniques in Taekwondo.