The correct answer is c) the sperm cell.
Flagella are whip-like structures that enable certain cells to move. In animals, the only cell type that possesses a flagellum is the sperm cell, which uses it to swim and reach the ovum for fertilization. Other cell types mentioned, like hair follicles, liver cells, ovum, and kidney cells, do not have flagella as they do not require mobility in the same way that sperm cells do.