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.

it's a nutrition food for pregnant mothers so they unborn child can get its nutrition that it needs to grow in to a healthy baby.

explanation:

and the mother is getting all of her nutrition and her calcium and vitamins .