Final answer:
Roger Fry, an English artist and art critic, coined the term post-Impressionism in 1910 to describe the work of artists like Paul Cézanne, Vincent van Gogh, and Paul Gauguin, who each developed unique styles beyond Impressionism.
Step-by-step explanation:
The English artist and art critic credited with coining the term post-Impressionism is Roger Fry. The term was introduced to describe a group of artists, including Paul Cézanne, Vincent van Gogh, and Paul Gauguin, who moved beyond the limitations of Impressionism and developed their own distinctive styles. While these artists, such as Cézanne with his simplified forms, van Gogh with his emotive use of color and brushwork, and Gauguin with his dream-like use of color, did not form a cohesive group, their innovative approaches to art have collectively become known as post-Impressionism. Roger Fry significantly contributed to this classification when he used the term in 1910 to describe the evolution of French art since Manet.