C. One Beat because 2 eighth notes equal one quarter note
"Shape" is the one visual element of art among the following choices given in the question that was most used by the artist, in <span>this piece entitled modern painting with clef, by Roy Lichtenstein. The correct option among all the options that are given in the question is the fourth option or option "d". </span>
The correct answer is: [D]: "the baby boom generation" .
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