From the following concentration versus time plot for four different reactions, which has the greatest instantaneous rate of disappearance at the time indicated by the arrow? 
Definitions:
Medieval Pictorial Devices
Visual strategies used in medieval art, such as symbolism and allegory, to convey messages, stories, and themes.
Hugo van der Goes
A pioneering early Netherlandish painter known for his intricate use of color and detail, as well as emotional depth in religious compositions.
Artistic Production
The process of creating artworks, which can involve various methods, materials, and concepts depending on the cultural and historical context.
Flanders
A historical region in the northern part of Belgium, known for its flourishing art scene during the Renaissance.
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