This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Anatomy
Joint at the knee is which type of joint - 
Select and explain. 
A. Synarthrosis, B. Symphysis, C. Amphiarthrosis, D. Diarthrosis
D: Diarthrosis
Answer: D: Diarthrosis 
Explanation: The knee joint is a condylar type of synovial joint.
All synovial joints are diarthrosis.


Synarthrosis (immovable) → Fibrous joints
Amphiarthrosis (slight mobility) → Cartilaginous joint
Diarthrosis (highly mobile) → Synovial joints