Explanation
Cytoplasmic streaming movements in a eukaryotic cell are due to the presence of D) Microfilaments.
Microfilaments are composed of actin protein and are part of the cytoskeleton of eukaryotic cells. They play a role in cell movement, division, and cytoplasmic streaming, which is the movement of the cytoplasm within a cell. In cytoplasmic streaming, the actin filaments form a network that pushes organelles and other cytoplasmic components around the cell in a coordinated manner.
Water, microtubules, and protofilaments do not play a direct role in cytoplasmic streaming movements.
