The prisoners of war were subjected to bestial atrocities.

Answer: Option C

Hardships : severe suffering or privation.
Punishment : the infliction or imposition of a penalty as retribution for an offence.
Cruelties : cruel behaviour or attitudes.
Jobs : a paid position of regular employment.
Atrocities : an extremely wicked or cruel act, typically one involving physical violence or injury.

Synonym of Atrocities is Cruelties