Concept:Judas Iscariot forfeited his place among the twelve disciples because he betrayed Jesus and then took his own life.
Explanation:Judas Iscariot agreed to hand Jesus over to the religious leaders for thirty pieces of silver.
After Jesus was condemned, Judas felt deep remorse for what he had done.
He tried to return the money, but the chief priests refused to take it back.
Overcome by guilt and despair, Judas went out and hanged himself, an act of suicide.
Because of this, his position among the twelve disciples became vacant.
Later, the apostles chose Matthias to replace Judas and restore the number of the twelve.
Therefore, the reason Judas Iscariot lost his position was not that he was expelled, nor that he fell sick and died, nor that he renounced the faith.
His own act of suicide ended his life and removed him from his apostolic role.
Answer:C. committed suicide