GRE Text Completion: JiJing 1373-GRE填空机经1373题 - 0R030L55G70ISDEGA

During the Renaissance, the use of optical lenses, which were capable of projecting images onto blank canvases, greatly aided artists by allowing them to accurately observe and depict the external world. In other words, these lenses were instrumental in conveying ____________. A. idealism B. optimism C. ambition D. realism E. sanguinity F. verisimilitude