You are presented with the question "What body part would be attached to the external framework?" and the following answer choices: 
- heart
 - insects
 - respiratory system
 - wings
 - humans
 - Tail
 - fat
 - digestive system

Now knowing that wings are part of the exoskeleton and attached to the thorax and an exoskeleton is an external framework, choose the best answer.


 

    wings     