Which convention does German Renaissance artist Matthias Grünewald use in the Isenheim altarpiece?
The altarpiece incorporates the medieval belief that art should communicate a religious idea.
The artist followed the Italian Renaissance convention of using one-point perspective to create a sense of depth.
The altarpiece incorporates the Italian Renaissance ideal that art should communicate intellectual ideas.
The figures on the altarpiece have idealized proportion and facial expressions.
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