Answer:
The main joints of the body such as those found at the hip, shoulders, elbows, knees, wrists, and ankles are freely movable. They are filled with synovial fluid, which acts as a lubricant to help the joints move easily.
Explanation:
elbows, knees, wrist, shoulder, and hips
lots of them
some of those are above
the reason they move freely is because they contain a fluid (acts like oil)
which helps moving them
