A. Understand the concept behind each element and principle of design in the artwork. Because, The It's just a Visual Analysis so my highest guess would got to A since it's the only one that makes Sense when it comes to Visual.
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Explanation:
Music theory is like a language, it provides us with a deeper understanding of the process behind the composition through notes, intervals. Notes are one of the important parts in music theory because it tells you its duration. The staff on the notes tells you the pitch. Every symbol has a unique meaning to it.