Which of the following parts is included in the thorax?

The thorax is one of the three main body segments of insects, located between the head and the abdomen. It is primarily responsible for locomotion and is where the majority of the appendages associated with movement are found.

Wings, which are critical for flight in many insect species, are attached to the thorax. This attachment allows the wings to function effectively, as the thorax houses the muscles that control their movement. Additionally, the thorax typically supports the legs, another set of appendages essential for movement and interaction with the environment.

The other choices are parts that do not belong to the thorax. Mouthparts are part of the head, where feeding occurs. Eyes are also located on the head, contributing to an insect's vision. Antennae, which are crucial for sensory perception, are situated on the head and are used for sensing the environment. Therefore, the inclusion of wings in the thorax highlights the thorax's essential role in locomotion and functionality within the insect body.