Synonym of ERROR

Answer: Option A

Blunder : a stupid or careless mistake.
Misadventure : death caused by a person accidentally while performing a legal act without negligence or intent to harm.
Ambiguity : the quality of being open to more than one interpretation; inexactness.
Misgiving : a feeling of doubt or apprehension about the outcome or consequences of something.
Error : a mistake.

Synonym of Error is Blunder