This got me to thinking: I don't recall that it was always the case that someone presenting for baptism even had to answer any questions! This was the earliest reference I could find regarding this:
w 42 302
Before proceeding with your baptism it is proper, first, that you answer affirmatively these questions to show you are taking this step with the Scriptural understanding thereof and are fit for baptism as a devoted servant of the Lord, fully responsible to Him:
(1) Do you believe in Jehovah God the Father, that "salvation belongeth unto Jehovah," and that Christ Jesus is his Son in whose blood your sins are washed away and by whom salvation comes to you from God?
(2) Have you therefore confessed your sins to God and asked for cleansing by Christ Jesus, and therefore turned away from sin and the world, and consecrated yourself without reservation to God to do his will?