Virgil represents reason and wisdom. He sometimes cannot accept Dante's sympathy and informs him that the punishment introduced to the residents of Hell is part of God's plan. He explains all the functions of Hell to Dante. Virgil can be seen as a geographical and spiritual guide.
This short description of character analysis shows that the correct answer is C.
I would say that the sentence that best describes the character of Virgil as he is portrayed in the Inferno is that C) he is a well-respected poet who exhibits clear reason and logic as he guides Dante through the Inferno. He is some sort of a guide to Dante through Hell, offering his reason and logic throughout.
