rahulg83 wrote:Because the population is denser there and the automobile is therefore inefficient as a means of transportation, a commuter rail system serving a given population is usually five times more efficient in a European city than it is in an American city.

A. serving a given population is usually five times more efficient in a European city than it is in an American city

B. serving a given population will usually be five times more efficient if it is placed in a European city instead of an American city

C. will usually be five times more efficient in a European city than one serving a comparable population in an American city

D. in a European city will usually be five times more efficient than will a system serving a comparable population in an American city

E. that is implemented in a European city will usually be five times more efficient than if it is implemented with a comparable population in an American city

Vemuri wrote:

rahulg83 wrote:Because the population is denser there and the automobile is therefore inefficient as a means of transportation, a commuter rail system serving a given population is usually five times more efficient in a European city than it is in an American city.

A. serving a given population is usually five times more efficient in a European city than it is in an American city

B. serving a given population will usually be five times more efficient if it is placed in a European city instead of an American city

C. will usually be five times more efficient in a European city than one serving a comparable population in an American city

D. in a European city will usually be five times more efficient than will a system serving a comparable population in an American city

E. that is implemented in a European city will usually be five times more efficient than if it is implemented with a comparable population in an American city

IMO D

kanha81 wrote:

Vemuri wrote:

rahulg83 wrote:Because the population is denser there and the automobile is therefore inefficient as a means of transportation, a commuter rail system serving a given population is usually five times more efficient in a European city than it is in an American city.

A. serving a given population is usually five times more efficient in a European city than it is in an American city

B. serving a given population will usually be five times more efficient if it is placed in a European city instead of an American city

C. will usually be five times more efficient in a European city than one serving a comparable population in an American city

D. in a European city will usually be five times more efficient than will a system serving a comparable population in an American city

E. that is implemented in a European city will usually be five times more efficient than if it is implemented with a comparable population in an American city

IMO D

Vemuri,

Why do you say [spoiler][D][/spoiler]? If you look closely, all answers except [spoiler][A][/spoiler] speak in"future tense" "will". The present sentence has been presented in "present tense", so the OA ought to be in "present tense".

IMO [spoiler][A][/spoiler]. What is OA?

rahulg83 wrote:Because the population is denser there and the automobile is therefore inefficient as a means of transportation, a commuter rail system serving a given population is usually five times more efficient in a European city than it is in an American city.





serving a given population is usually five times more efficient in a European city than it is in an American city



serving a given population will usually be five times more efficient if it is placed in a European city instead of an American city



will usually be five times more efficient in a European city than one serving a comparable population in an American city



in a European city will usually be five times more efficient than will a system serving a comparable population in an American city



that is implemented in a European city will usually be five times more efficient than if it is implemented with a comparable population in an American city