Question

the simple one - celled organism seen here, an amoeba, moves by streaming its cytoplasm into false feet or pseudopods. amoeba can easily change shape because two - thirds of the mass of the cell is
a air.
b water.
c the cytoskeleton.
d a contractile vacuole.

Explanation:

Amoebas are single-celled organisms with cytoplasm primarily composed of water, enabling shape change. Water constitutes most of the cell mass.

Answer:

B. water.