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The human sperm cell consists of a head, neck, middle piece, and a long tail. The tail is the primary organelle responsible for the locomotion of the sperm cell.
The tail of the sperm is structurally a flagellum. Flagella are long, whip-like appendages that undergo rhythmic beating to propel the cell through a fluid medium (such as the female reproductive tract).
Muscular movement involves muscle fibers, which are not present in sperm. Ciliary movement involves short, hair-like structures (cilia) which are not the primary mechanism for sperm. Amoeboid movement involves pseudopodia, which is characteristic of leukocytes or macrophages, not sperm. Therefore, flagellar movement is the correct mechanism.
Final Answer: (B) flagellar movement