The correct option is A Spermiogenesis
Spermatogonia ↓SpermatocytogenesisSpermatid ↓SpermiogenesisSpermatozoa ↓SpermiationRelease⎫⎪
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⎪⎭Spermatogenesis
Hence, the spermatids are transformed into spermatozoa (sperms) by the process called spermiogenesis.