Which 19th-century art movement, led by artists like Monet and Renoir, emphasized light and visible brushstrokes over detail?

Impressionism

The movement's name came from a hostile critic's review of Claude Monet's painting 'Impression, Sunrise,' which he claimed looked like a mere sketch. Impressionists broke tradition by painting 'en plein air' (outdoors) to capture the fleeting effects of sunlight at different times of day.