D
The function of the shown protein is most likely the formation of muscle fiber
Explanation:
This is because the protein is thin and elongated (like a myofibril) and seem to have contractile properties. The protein seems most likely like an actin filament because it has grooves that are most likely the binding sites for myosin heads.
One of the roles of muscle fibers is to power movement through contraction and relaxation to move muscle. The numerous nodes along the length of the protein are most probably mitochondria. These organelle produce numerous ATP molecules required to power the contraction and relaxation actions of the protein.
Learn More:
For more on contractile proteins check out;
https://brainly.com/question/14408636
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