You would discuss what you think El Greco intended to convey in the Interpretation step of critical analysis.

In the common four-step model of art criticism—Description, Analysis, Interpretation, Evaluation—Interpretation is where you explain the meaning or message of the artwork, including the artist’s possible intentions and what the work communicates about themes like faith, death, or the afterlife in The Burial of the Count Orgaz.

TL;DR: The correct step is Interpretation.

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