Diesel engines burn as much as 30% less fuel than gasoline

Question

Diesel engines burn as much as 30% less fuel than gasoline engines of comparable size,  as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have  been implicated in global warming.

A of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have
B of comparable size, as well as emit far less carbon dioxide gas and far fewer of the other gasses having
C of comparable size, and also they emit far fewer carbon dioxide and other gasses that have
D that have a comparable size, and also they emit far fewer of the other gasses having
E that have a comparable size, as well as emitting far fewer of the other gasses having 
 
OA is A  Im not convinced with OA ,its a mgmat question!!

amitdgr · Answer

Is it A ?

we need "that have" here. Only A and C have "that have".

in C ->  fewer  Carbon dioxide is plain wrong. A may not be perfect, but it is the best.

what is the OA ?

stallone · Answer

B for me :

A of comparable size,  as well as emitting  far less carbon dioxide gas and far fewer of the other gasses that have - not parallel in tense
B of comparable size, as well as emit far less carbon dioxide gas and far fewer of the other gasses having
C of comparable size, and also  they  emit far fewer carbon dioxide and other gasses that have - they is ambiguous 
D that have a comparable size, and also  they  emit far fewer of the other gasses having - same as C
E that have a comparable size,  as well as emitting  far fewer of the other gasses having -- same as A

KASSALMD · Answer

Horrendous question; but the answer seems to be A. 
The others have grammatical errors.

bigtreezl · Answer

A has a grammatical error too. None of these seem right. Probably a typo by mgmat.

technocrat · Answer

A has 'far  fewer  of the other gasses ' as well, whats the OA?

pm4553 · Answer

A

less Vs Fewer - less CO2, CO2 cannot be measured so less should be used.

A of comparable size, as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have

B of comparable size, as well as emit far less carbon dioxide gas and far fewer of the other gasses having - having??

C of comparable size, and also they emit far fewer carbon dioxide and other gasses that have - less vs fewer

D that have a comparable size, and also they emit far fewer of the other gasses having - having??
E that have a comparable size, as well as emitting far fewer of the other gasses having - having??

FN · Answer

i initially went with A..a few months back and reading now..I am like none of these make sense...

bigfernhead · Answer

They're all wrong.

ritula · Answer

C seems to be the best choice for me
 Pls underline the incorrect part. Its difficult to read w/t that.

UMB · Answer

I vote for B. (this choice IMO best among all)

"They" in choices C and D seems not to have clear antecedent: it can be anything 
A and E are out for "emitting" it should have been "emit" to keep //.

elmagnifico · Answer

They all look messed up, but if i have to chose i would go with B.

bigfernhead · Answer

The best explanation so far: https://www.manhattangmat.com/forums/die ... t2129.html As well as + VERBing is correct.

GMAT TIGER · Answer

"as well as emitting far less carbon dioxide gas and far fewer of the other gasses that have been implicated in global warming" is a modifying phrase but I never saw "as well as" in modifying phrase. Now I should note that "as well as" also acceptable as modifying phrase:

Diesel engines burn as much as 30% less fuel than gasoline engines of comparable size, (as well as) emitting far less carbon dioxide gas and far fewer of the other gasses that have been implicated in global warming. 
In that sense A should be ok.

icandy · Answer

Initially I felt that emit and burn are parallel. How ever having been at the end takes B out of contention. A remains

Nihit · Answer

A for me

have been is the key for 3-2 strategy here. C has issues with pronoun reference in  they

fewer gases(countable ) is correct so is less gas (non-countable )

amitdgr · Answer

I read this on some old post of gmatclub

looks like this thing holds good in our sentence here ...

spriya · Answer

yes as well as means inaddition !!! hence i think ,as GMAT TIGER said 
here if we just simply forget this (as well as ) for a moment and then read the sentence A sounds the best!!!

Also having ,having been are all wrong ,that have been implicated is correct

here if we look at the meaning then also its obvious that engines burn fuel emitting gases !!

so my doubt got clarified !!
thanks a tonne for the posts !!!

great posting :thanks :btw :btw :good :good

Diesel engines burn as much as 30% less fuel than gasoline

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