Answer: the major function of mucus is to protect the lung through mucociliary clearance against foreign and chemicals entering the lung.
Explanation:
I think it’s D............
Answer:C the Cytoskeleton
Explanation: It is the Cytoskeleton because provides support to the cell. It is not the cell wall because that is for the plant cell, but the cell on the left is a eukaryotic animal cell. hope this helps (:(:):)
