I believe the answer is C joints. The only other option would be obstructive sleep apnea however, you would assess their oral airway to determine this. So I will go with Osteoarthritis.
Body planes, look at this website for more info
https://www.google.co.uk/url?q=https://www.boundless.com/physiology/textbooks/boundless-anatomy-and-physiology-textbook/introduction-to-anatomy-and-physiology-1/mapping-the-body-33/body-planes-and-sections-289-1344/&sa=U&ved=0ahUKEwjQs8XR9YrUAhXHKcAKHapnD58QFggUMAI&usg=AFQjCNH0hXmL_w50JNtIeUTU7BDPw10XDg
Answer:
Cell: Basic unit of structure and function of all living things. ... Organ: Structure composed of one or more types of tissues. ... is the digestive system, which breaks down food into a form that cells can use. ... organized into the following levels: cells, tissues, organs, and organs system(s)
Explanation: