Let's see now
They chose ... choice is not free will, you can only choose between the options given, the One giving the options is the only One who has free sovereign will. Moreover consider this
Adam was created by God's own will, God did not ask him "would you like to be created?" He did not confer "what manner of creation would you like to be created?" God created Eve with ne'er a "please may I?"
Strange that nobuddy gets angry about this

I mean how dare we talk about foreknowledge and predestiny? [we'll get slandered as Calvins]
So Adam had life, the life had given him, but this does not meet God's requirement for love. having created us God now seeks our approval of His creation [of ourselves in His beautiful garden of delight] THAT'S why the tree.
Man was FREE to live and enjoy ... but if he chose to die ... dead men have no freewill, so even the choice is a non choice. How COULD Satan tempt Adam? the answer was to trick him, how?
He tricked him into believing he had free will, he tricked him into believing he could do whatever he pleased with no consequence "You'll be like God ... you will not die"
... 'scuse me I just cooked up some delicious pork belly slices which I just gotta eat ... I'll get back to you