How did Victor Frankenstein die?

The correct answer to this question is pneumonia. Victor Frankenstein contracts this infection when he travels across the cold, icy Arctic Ocean. He was crossing this ocean to escape a monster but instead contracted the illness. Some say that the Monster is the cause of death because that is why Victor Frankenstein put himself in a predicament to be in the ocean.

However, the Monster did not directly kill Victor Frankenstein. Instead, pneumonia did. The irony is that the same thing that he created, the Monster, is what led him to flee, contact pneumonia, and lead him to his death.