1.  REMORSELES : PITY ::

A. nefarious : virtue
B. guileless : youth
C. charitable : money
D. despondent: sympathy

Answer: Option A

Explanation:

(ANTONYM VARIANT) A remorseless (meaning merciless) person lacks pity; a nefarious (meaning evil) person lacks virtue (meaning goodness).(A)

The related antonym relationship is remorseless : pitying -nefarious virtuous