Hi lovely,
The answer you're looking for would be A)
It's important to for these gymnasts to bend their knees slightly before taking the jump; if they don't their knees might lock and that would force them to land and possibly break their legs.
Basically, your thumb is the only part of your body that has saddle joints. the bones in your saddles joint is responsible for moving back and forth, side to side. these joints are free enough to make any motion in your body. They are the only joints that can do 360 degrees and rotate with their own axis. But, because of its free moving, it is prone to any dislocation compared to other movable joints.
All of the following helped establish adolescence as a distinct life stage in the US except an increase in the number of puberty rites performed.
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