Answer:
I would say the second one.
Explanation:
I'm sorry if it's wrong
The human cells will lose totipotency
about 4 days after fertilization. The fertilized egg creates a single
totipotent cell called a zygote. The
zygote divides into identical totipotent cells. Approximately about 4 days, the
totipotent cells begin to specialize and becomes pluripotent.