What element of dantes inferno showed the reader that he wants to expose the corruption in the church

Answer:By placing many of the church leaders among the sinners in hell.

Explanation: Dante used this as a very strong example to show that sin can be found in everyone, no matter how "pure" people believed they were. He wanted to show that church leaders sin more than known to people of the church.

Purgatory, Canto XVI

Dante deals directly with the corruption and sins of the church, during Marco Lombardo's discourse on the two suns, while he also expresses his strong disagreement towards the Donation of Constantine, and also, even if in an indirect way, against the greed and abuse of their position, carried on by popes and churchmen.