Answer:
Human fetal cell
Explanation:
The contractile ring is formed in the cytoplasmic plain. This ring gradually constricts and helps in the separation of daughter cells. The contractile ring is found in the animal cell division i.e. during cytokinesis. In plant cells, the cytoplasm divides by the cell plates. Later this cell plate forms the cell wall of the daughter cells. Here onion root tip cells and leaf cells are plant cells. Therefore no contractile ring is found in them. So the correct answer is the human fetal cell.
