do vs does.. which is singular

D looks okay

IMO C

abhishek.pati wrote:IMO C

C is lacking parallelism.. it is btw B and D

its "b".
rest all options hav parallism problem
a= compares small classroom vs "maintaining"-*(adjective) regular sized classroom.
b-correct
c-wrong as
d wrong , ambiguous
e-absurd meaning

IMO - B

sameerballani wrote:Although few would disagree that small classrooms of a maximum of 15 students are ideal environments in which to educate the young, financially strained counties point out that small classrooms cost twice as much as maintaining regular sized classrooms.

A. small classrooms cost twice as much as maintaining regular sized classrooms.
B. small classrooms cost twice as much to maintain as regular sized classrooms do.
C. maintaining small classrooms cost twice as much as regular sized classrooms do.
D. maintaining small classrooms cost twice as much as it does for regular sized classrooms.
E. to maintain small classrooms cost twice as much as for regular sized classrooms.

[spoiler]OA:later[/spoiler]
can someone explain each option

parallelism and agreement.
Eliminate A C, D and E for agreement issues (correct alternatives)
a) maintaining - cost (costs)
c) maintaining - do (does)
d) maintaining - oost (costs)
e) to maintain - cost (it costs)

Only B stands out.

Hi,
Although few would disagree that small classrooms of a maximum of 15 students are ideal environments in which to educate the young, financially strained counties point out that small classrooms cost twice as much as maintaining regular sized classrooms.
A. small classrooms cost twice as much as maintaining regular sized classrooms.
Cost of small class rooms is compared to maintenance of regular sized classrooms(Comparison error)
B. small classrooms cost twice as much to maintain as regular sized classrooms do.
C. maintaining small classrooms cost twice as much as regular sized classrooms do.
Subject-Verb error, Comparison error
D. maintaining small classrooms cost twice as much as it does for regular sized classrooms.
Subject-Verb error, Comparison error
E. to maintain small classrooms cost twice as much as for regular sized classrooms.
Subject-Verb error, Comparison error

Seems almost a clone of the OG question number 89:

Dirt roads may evoke the bucolic simplicity of another century, but financially strained townships point out that dirt roads cost twice as much as maintaining paved roads.