The ones who come to faith in Christ in adulthood take their faith serously. Even those who were baptized as babies, can as they get older be called to accept Christ as personal Savior. A Blessed Easter.
Yes they can...But they may not...
A Christian is a disciple of Jesus Christ...To say that someone became a disciple of Jesus Christ because he got baptized in water is a stretch...To become a Christian one must make a personal decision to become a disciple of Jesus Christ...
Jesus died so that we could be reckoned sinless...Without which we individually can not inherit the Spiritual Kingdom of God...