Synonym of GAINSAY

Answer: Option C

Advantage : a condition or circumstance that puts one in a favourable or superior position.
Proposal : a plan or suggestion, especially a formal or written one, put forward for consideration by others.
Contradict : deny the truth of (a statement) by asserting the opposite.
Suggestion : an idea or plan put forward for consideration.
Gainsay : deny or contradict (a fact or statement).

Synonym of Gainsay is Contradict