Question 21- 24 are based on the following passage.

    Many critics of popular culture claim that the modem information age has led the public to be more interested in the personal lives of entertainers than in their actual artistic abilities. Some have even gone so far as to posit that many of today's famous faces would be nowhere were it not for their personal scandals. This is not, however, the purely modern phenomenon that some believe it to be. 

    As far back as human records go, evidence can be seen of public figures indelibly linked, accurately or otherwise, with scandal. One notable example is Maria Callas. This glamorous Greek opera singer was almost as well known for her supposed temperamental outburst,. vitriolic rivalries, and tempestuous relationships as for her musical abilities. During her lifetime, many critics referred to her robust voice as inherently flawed, implying too that her fame was undeserved. Today, however, without Callas's undeniably vivacious personality clouding the picture, most critics agree that she was in fact an immensely talented singer of the first degree, ranging in her performances from dramatic soprano pieces such as Die Walkure to coloratura, bel canto pieces such as I Puritani managing to excel at both. Such talent is truly undeniable, no matter what the personality of the performer. 

The organization of this passage could best be described as ....