What data-gathering activity would be useful for biomechanical analysis

"Measuring the angle at which a gymnast’s body bends during an aerial flip" is the one data-gathering activity among the choices given in the question that would be useful for a biomechanics analysis. The correct option among all the options that are given in the question is the fourth option or the last optional.

li uzi vert       choose the one you think is better lil xan, lil uzi vert, or fetty wap

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