(A) Those who killed for the love of killing. (X)
(B) Those who held captives for ransom and sold them as slaves. (X)
(C) Those who set their prisoners ashore on desert islands to die thirst and starvation. (X)
(D) Those who merely robbed their victims and let them go unharmed. (✔)
Answer: Those who merely robbed their victims and let them go unharmed