Antonym of ACUMEN

Answer: Option B

Acumen : the ability to make good judgements and take quick decisions.
Intelligence : the ability to acquire and apply knowledge and skills.
Imbecility : Stupid or inane behavior.
Potentiality : latent qualities or abilities that may be developed and lead to future success or usefulness.
Unfamiliarity : the quality of not being known or recognized.

Antonym of Acumen is Imbecility