Final answer:
Claude Monet's painting Impression, Sunrise, 1872 is significant as it became the namesake of the Impressionist movement and embodies its key characteristics. It also depicts the ephemerality of sensations and captures the changing light and atmospheric conditions.
Step-by-step explanation:
Claude Monet's painting Impression, Sunrise, 1872 is significant in several ways. Firstly, it became the namesake of the entire Impressionist movement, as a critic coined the term based on the title of this painting. Secondly, this artwork exemplifies the key characteristics of Impressionism, such as portraying overall visual effects instead of details and using short, broken brushstrokes of mixed and unmixed color to create intense color vibrations. Lastly, Impression, Sunrise is considered modern because it captures the fleeting nature of sensations, portraying rapidly shifting light and changing atmospheric conditions.