After the Fall, Adam and Eve left Eden, began mortal life, had children and humanity entered a probationary state where time was given to repent and choose God despite being fallen. The passages teach us that the Fall was part of God’s wisdom, making mortal life and joy possible. “Adam fell that men might be and men are that they might have joy”.
2 Nephi 2:19-25
Mosiah 3:19
Alma 12:31-37
2 Nephi 2:11-20,25-30