The Dean of the College of Cardinals, or Cardinal-dean, is the primus inter pares of the College of Cardinals, elected by the cardinal bishops holding suburbicarian sees from among their own number, an election, however, that must be approved by the Pope. Formerly the position of dean belonged by right to the longest-serving of the cardinal bishops.
Who does not need the approval of the Pope? (If the question is unanswerable, say "unanswerable")
unanswerable