The second document sets out who has power of attorney for your healthcare decisions so that they may answer questions that may not be addressed by your living will. The first document you need to create to ensure that your medical wishes are honored is usually called a living will.
Amphiarthrosis is the correct answer.
Amphiarthrosis is a type of articulation located between bony surfaces in which bones are connected to elastic cartilage or ligaments allowing only limited degrees of motion. There are two other types of articulations, such as synarthrosis and diarthrosis (or synovial joint). Differently from amphiarthrosis, synarthrosis do NOT allow any kind of movement and diarthrosis allows free movement.
I think it would be C hoped this helped