Which of the following is the name of the lower jawbone that forms the lower jaw?

The mandible is the correct answer because it is specifically defined as the lower jawbone and plays a crucial role in various functions such as chewing, speaking, and supporting the lower teeth. The mandible is the largest and strongest bone in the face, allowing for the movement necessary for these activities. It also connects with the maxilla (the upper jaw) at the temporomandibular joint, which enables jaw movement.

The maxilla refers to the upper jawbone and is not considered the lower jaw. The palatine bones are located at the back of the oral cavity and help form the hard palate, while the zygomatic bones, or cheekbones, are situated on the lateral aspects of the face. Hence, among the listed choices, the mandible is distinctively identified as the lower jawbone.