George: Throughout the 1980s and early 1990s, hardly anyone learned ballroom dancing. Why is it that a large number of people now take ballroom dancing lessons?
Boris: It’s because, beginning in 1995, many people learned the merengue and several related ballroom dances. Because these dances are so popular, other ballroom dances are now catching on.
Boris’s response to George is most vulnerable to criticism because it fails to
(A) show that the people who learned the merengue are the
same people who are now interested in other ballroom dances - WRONG. Irrelevant. Same or not it makes no impact.
(B) explain why ballroom dancing was so
unpopular before 1995 - WRONG. Neither we are concerned about unpopularity nor the period before 1995.
(C)
relate the merengue to the forms of
dancing that were more prevalent before 1995 - WRONG. Neither relating is true nor we are concerned about what was prevalent before 1995.
(D)
account for the
beginning of the revival of interest in ballroom dancing - CORRECT. At the first place itself why people have started learning ballroom dancing is what Boris's response fails to elaborate or address.
(E) demonstrate that
all types of ballroom dancing are currently popular - WRONG. No at all it projects that all or none are currently popular.
Answer D.