Which of the following best describes postmodernism?

Postmodernism is characterized by a critical stance towards grand narratives and absolute truths, often questioning the validity and authority of traditional sources of knowledge. It emphasizes the idea that knowledge is constructed rather than discovered, suggesting that what we consider "truth" is heavily influenced by cultural, social, and historical contexts. By stating that it "sees no reliable sources of knowledge," this option accurately reflects postmodernism's skepticism toward universal or objective standards of truth.

In contrast, the other options imply certainty and reliability in sources of knowledge or methods that postmodernism fundamentally challenges. For instance, valuing empirical evidence and scientific methods above all indicates a belief in objective reality, which postmodernism contests by suggesting that such knowledge is often subjective or socially constructed. The assertion that it promotes singular perspectives of truth also runs counter to postmodern beliefs, which advocate for multiple, often conflicting perspectives rather than a single, definitive truth. Thus, the selected answer encapsulates the essence of postmodern thought quite accurately.