The formal operational stage emerges:_________.
a. sometime around the eighteenth birthday.
b. earlier in boys than in girls.
c. unexpectedly, like a dropped weight.
d. sometime around the onset of puberty.

Respuesta :

Answer:

D

Explanation:

It is a very hard thing, but according to Simply Psycology, it says that it starts around age of twelve to adulthood. Sooo, I would go with D.