Concept:The phrase Malikyawmid−Din is an Arabic expression from Surah Al-Fatihah.Explanation:Malik means "Master" or "King".Yawmid−Din means "the Day of Judgment" or "Day of Retribution".So the full phrase means "Master of the Day of Judgment".This matches the meaning of "the king of the day of judgment".Answer:A. The king of the day of judgment.