What was a major source of inspiration for Black Swan's production design by Thérèse DePrez?

The correct choice highlights nature and trees as a significant source of inspiration for Thérèse DePrez's production design in "Black Swan." The film's exploration of themes such as duality and transformation is mirrored in the natural elements and organic motifs present throughout the set design. The use of nature, particularly the imagery related to trees and forests, evokes a sense of psychological depth and interconnectedness with the protagonist's internal struggles. This motif reinforces the film's overarching tension between the natural and the unnatural, reflecting the character's descent into madness and the search for identity.

In contrast, while urban landscapes, cultural motifs, and historical costumes may influence various aspects of film design, they do not fundamentally capture the essence of what shapes the visual narrative of "Black Swan" in the same way that the connection to nature does. The production design aims to facilitate an immersive atmosphere that aligns with the film's psychological and emotional landscape, making nature a pivotal element in conveying its themes.