Answer: I would contend that the right answer is the A) The desperate screams create a feeling of despair at the start of the journey.
Explanation: Just to elaborate a little on the answer, it can be added that imagery is the use of figurative language, one that employs literary devices that appeal to the senses of the readers, as it is the case here, or that invite them to go beyond the literal meaning of the words, enriching their reading experience. Inferno is the first part of Dante's Divina Comedy, and is meant to suggest an atmosphere of despair and desolation. By referring to "desperate screams," which one can almost hear, Dante helps shape that atmosphere.
In Canto I Virgil actually saves Dante, so option D is incorrect. In addition, "cries out" does not suggest surprise, but pain and hopelessness, so option C should also be discarded.