First cell after fertilization?

Zygote

Explanation:

Fertilization is the process whereby the nucleus of a male gamete fuses with the nucleus of a female gamete to form a zygote. This occurs in the oviduct following copulation. A diploid zygote is formed. The zygote undergoes several mitotic divisions as it moves down the oviduct to form a sphere of cells called blastocyst.

the answer is z.

the human body has five levels of organization. level 1: cells. cells are the basic units of life and form the first level of organization. cells in the human body have specific functions. examples include nerve cells, blood cells, liver cells, and so on.