Final answer:
The Impressionists were inspired to turn away from traditional academic painting by factors including the development of photography and the influence of Barbizon painters.
Step-by-step explanation:
The Impressionists were inspired to turn away from traditional academic painting by multiple factors. One possible influence was the development of photography in the 19th century, which challenged the artist's role in reproducing reality. Rather than competing with photography, the Impressionists sought to express their own perceptions of nature and modern life through their artwork. Additionally, the Impressionists were influenced by the Barbizon painters who practiced plein air painting, capturing the changing effects of light and color directly from nature.