The old man shows no sign of infirmity even though he is eighty years old.
A
indolence
B
fickleness
C
feebleness
D
firmness
Correct Answer: feebleness
Indolence : avoidance of activity or exertion; laziness.Fickleness : changeability, especially as regards one's loyalties or affections.
Feebleness : a state of being very weak.
Firmness : the quality of having a solid, almost unyielding surface or structure.
Infirmity : physical or mental weakness.
Synonym of Infirmity is Feebleness