Which of the following is a key principle of Postmodernism in art?

The key principle of Postmodernism in art is the questioning of originality and the embracing of pastiche and irony. This movement emerged as a reaction against the ideas of Modernism, which often emphasized the notion of the "original" artist as a singular genius creating unique works. In contrast, Postmodernism celebrates the mixing of styles, the blending of high and low culture, and the self-referential nature of art.

Pastiche, a hallmark of Postmodern art, involves combining elements from various sources or styles, often without the intention of adhering to traditional artistic norms. This approach acknowledges that all art is influenced by prior works and cultural contexts, thus challenging the idea of a linear artistic progression. Irony plays a crucial role in this process, as it allows artists to engage in playful critiques of societal norms, established genres, and the concept of authority in art itself.

The other choices, while they touch on aspects of art practices, do not encapsulate the essence of Postmodernism as effectively. Emphasizing individual genius and originality is more aligned with Modernist thought. Incorporating photographic elements exists in various art movements but does not define Postmodernism specifically. Focusing on social realism and political themes is significant in some artistic expressions,