Synonym of HERETICAL

Answer: Option C

Fiery : consisting of fire or burning strongly and brightly.
Corrupt : having or showing a willingness to act dishonestly in return for money or personal gain.
Impious : showing a lack of respect for God or religion.
Disputable : not established as a fact, and so open to question or debate.
Heretical : believing in or practising religious heresy.

Synonym of Heretical is Impious