Answer:
The correct answer will be- sacroiliac joint
Explanation:
The sacroiliac joint is a type of joint which joins the sacrum bone (support the spine) to the ilium bone (support the sacrum on both sides).
These bones are held together by a collection of strong ligaments which can support the weight of the upper body. The joints contain irregular depressions and elevations which interlock the two bones.
Thus, the sacroiliac joint is the correct answer.