Concept:Al-Qayyum is a divine attribute of Allah that highlights His self-subsistence and everlasting nature.Explanation:The Arabic word al-Qayyum comes from the root meaning "to stand" or "to remain."It describes Allah as the One who sustains all existence and depends on nothing.Unlike His creatures, Allah has no beginning and no end.Therefore, al-Qayyum best matches the meaning of "eternal" rather than "merciful", "unique", or "powerful".Answer:B. eternal