I think that the answer is A .
I believe the correct answer would be actin filaments. These are polmers that are linear with G-actin as subunits that attaches ith myosin heads during the skeletal muscle contraction. They are necessary for cell shape, adhesion and contraction.
Cholecystitis is inflammation of the gallbladder. The gallbadder hold a digestive fluid thats released into ur small intestine