Answer:
The correct answer is - the movement or streaming of the protoplasm within the cell.
Step-by-step explanation:
Cyclosis is the movement or the streaming of the protoplasm within the cell. It is also known as cytoplasmic streaming which is the flow or movement of the cytoplasm or protoplasm, fluid present in the cell-matrix, within a cell of plant or animal.
This motion or flow occurs due to the protein known as actin in the cytoskeleton of eukaryotes that helps in the transport of material to various part of the cell such as minerals and molecules like oxygen.
Thus, the correct answer is - the movement or streaming of the protoplasm within the cell.