What significant themes were prevalent in 20th-century art?

The choice highlighting identity, authority, and environmental issues as significant themes in 20th-century art accurately reflects the diverse and transformative nature of artistic expression during this period. Artists responded to rapid social, political, and technological changes, often exploring issues related to personal and collective identity, including gender, race, and cultural heritage. The struggle for authority and representation can also be seen in their work, particularly as movements like feminism, civil rights, and LGBTQ+ rights gained prominence.

Environmental issues emerged as a critical concern by the latter part of the century, prompting artists to comment on humanity's impact on the planet and advocate for ecological awareness. This multifaceted engagement with pressing themes allowed art to serve as a platform for dialogue and critique, making it an essential medium for reflecting societal changes and challenges.

The other options may touch on themes relevant to certain aspects or periods of 20th-century art, but they do not encapsulate the breadth and depth of the primary concerns that shaped artistic movements and practices throughout the century as comprehensively as the selected answer. Monetary wealth and exclusivity are more concerned with the art market than the thematic undercurrents driving creative output. Historical documentation and realism, while significant, represent more traditional approaches that may not fully capture the evolving complexities