Answer:
Actin.
Explanation:
Microfilaments are one of the most important constituent of the cytoskeleton. Microfilamnets consists of actin and myosin. They helps in the cellular motility and movement of vacuoles.
Actin is the cytoskeletal proteins that helps in the cytokinesis process. Actin helps in the formation of cleavage furrow that helps in the division of the cells. The contractile ring forms during the early anaphase stage and then broken down in the cytokinesis, that are made of actin filaments.
Thus, the answer is actin.
