Question

what is this type of joint?
symphysis
fibrous joint
synovial joint
synarthrosis

Explanation:

A symphysis is a type of cartilaginous joint where the bones are joined by fibrocartilage. The joint in the pelvic region shown is a pubic symphysis, which is a symphysis joint. Fibrous joints are joined by dense fibrous tissue and allow little or no movement. Synovial joints have a synovial cavity and allow a wide range of movement. Synarthrosis is a type of immovable joint.

Answer:

A. symphysis