Answer:
They joyfully killed their nefarious enemies
Step-by-step explanation:
If the writer shows little empathy for the murder of the mulsumans, it means that, for the author, the life of the mulsumans does not matter, the author does not like them. For this reason, the statement that best supports this claim is "They joyfully killed their nefarious enemies" because whoever kills an enemy will have little empathy for this death, on the contrary, the killer will feel satisfied and happy for the death of the one the killer does not like .