He could but chose to take the title of Pope Emeritus instead.
He was a cardinal in the Roman Curia.
Pope Paul VI named him a cardinal in 1977.
It was not a single cardinal. 2/3 of the Cardinal Electors had to vote for him.
Please specify which pope. If you are referring to Pope Francis, he was selected as a cardinal by Pope Benedict XVI.
He will be retiring to a renovated convent at the Vatican to live out the last days of his life. At his age, he will return to being a Cardinal, but a non-voting Cardinal as he is over the age of 80.
He was made a cardinal in 1977 by Pope Paul VI.
Pope Benedict XVI, known at the time as Joseph Cardinal Ratzinger.
Pope Benedict XVI, known at the time as Joseph Cardinal Ratzinger.
He was elevated to cardinal by Pope Paul VI on June 27, 1977.
Pope Cardinal Archbishop Bishop Priest Deacon
there hasn't been a pope Benedict XVII the pope now is Benedict XVI He was elected by the College of Cardinals, a body of his peers, as our current Pope is the former Cardinal Josef Ratzinger.
His Holiness, Pope Paul VI, made Josef Razinger the Cardinal Archbishop of Munich on 27 June 1977.