Are you trying to say that Adam didn't know he had a choice..
As an atheist, and along with a number of Christians, I don't think Adam was real, so that question is somewhat moot. From within the tale, given that Adam was created with knowledge of Good and Evil, whilst he might have been capable of choice that choice was not free, because it was not informed.
Adam's life had not enabled him to comprehend the implications of the choice, because he had not been exposed to the understanding - not having free will does not mean that life does not afford you choices or the illusion of being able to select them, but rather that what you think is a decision is an inevitable consequence of who you are at that moment.
Adam knew what it meant when God said ''Do not eat from the tree of knowledge''
He also understood that to do so would mean death.
Obedience is good and disobedience is bad (evil) - how did Adam, created without the knowledge of those, know?
Just a point, though - citing the Big Boy's Book of Jewish Bedtime Stories doesn't actually address any of the points I made about why free will is illusory.
O.