GMAT Sentence Correction (SC) | Re: SV Agreement Revision: Every workday at dawn, the patriarch

[quote="souvik101990"] Every workday at dawn, the patriarch of one of the city’s fiverichest families leaves his mansion and walks to city hall.

A. richest families leaves his mansion and walks
B. richest families leave his mansion and walk
C. richest families leaves his mansion and walk
D. richer families leave his mansion and walks
E. richer families leaves his mansion and walks


the patriarch of..... is singular ===>needs a singular verb
walkS leaveS

richeST because the comparison is among the
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