Richard Trevithick - 700+ SC

[GmatKiss]

Long-distance travel for humans primarily relied on animal power until 1829, when the steam locomotive was invented by Richard Trevithick, who had found a way to provide sufficient traction for movement and led to the building of locomotive-driven passenger trains.

who had found a way to provide sufficient traction for movement and led to the building of locomotive-driven passenger trains

who found a way to provide sufficient traction for movement and led to the building of locomotive-driven passenger trains

who, after finding a way to provide sufficient traction for movement, led to the building of locomotive-driven passenger trains

whose discovery of a way to provide sufficient traction for movement led to the building of locomotive-driven passenger trains

who had led to the building of locomotive-driven passenger trains by providing sufficient traction for movement

OA after sometime

[rohangupta83]

IMO D

Past Perfect Tense is incorrect so A and E are out

C has a modifier error. It seems to me that "led to the building of locomotive-driven passenger trains" modifies "who" instead it should modify the "finding/discovery".

B states that Richard found a way and then led to building locomotives.

between B and D, i pick D as it clearly states the Richard's discovery lead to building locomotive trains.

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