Answer:
Door and window.
Explanation:
Synovial joints are those joints which are found between bones that move against each other, e.g. shoulder, hip and knee etc. Movement of door and window are the example of synovial joints because door and window also moves around fix axis just like these joints. Thare also some other examples of synovial joints such as liver etc.
The answer would be the olecranon which forms the point of the elbow
1. D (A mental rehearsal, also known as re-thinking things over in your head.)
2. A or B (A is basically stress, but it helps you, so not sure.)
3. D (An Stressor causes stress.)
4. C (Guilt)
5. A. (Personality)