(A) "He moaned to himself like some baffled, prowling beast." → Uses "like" for comparison → Simile (III)
(B) I had to wait in the station for ten days—an eternity → Exaggerating ten days as "an eternity" → Hyperbole (IV)
(C) The smell of baking muffins welcomed us inside → The smell is given the human action of welcoming → Personification (II)
(D) "Life for me ain't been no crystal stair." → Direct comparison of life to a crystal stair without "like" or "as" → Metaphor (I)
Hence, Option 3: (A) - (III), (B) - (IV), (C) - (II), (D) - (I) → Simile uses explicit comparison words (like/as), hyperbole exaggerates for emphasis, personification gives human qualities to non-human things, and metaphor makes direct comparisons without comparison words → correct