'Mountains sang in prayer' gives human qualities to mountains, making it personification (A-II). 'Cute baby was like a doll' uses 'like' for comparison, making it a simile (B-III). 'Dictator dared David to play the drums' repeats the 'd' sound, making it alliteration (C-I). 'Witty fool' combines contradictory terms, making it an oxymoron (D-IV). This matches option 4.