Biomechanics is the study of which of the following? a. cells b. machines c. molecules d. movement

Option D

Explanation:

It can defined as the study of the motion, function and structure of the mechanical aspects of the biological systems.

It can be considered at any level of the biological system. It can be cell, cells and organelles. It is the study of the movement.

It can also be defined as the study of gas or fluid that flows in or around the biological systems.

Example: blood and lymph movement inside the body.

i think it's the first one because doctors aren't the ones who get rid of the old needles. most of them time it's not even doctors who give you shots, it's nurses.