Q)12. Unlike a hurricane, which can be observed from within, a tornado is so small that such a study has not been practical.
[A] that such a study has not been practical
[D] as to not make such a study practical
OA [spoiler]A but whats wrong with the other option??[/spoiler]
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[A] that such a study has not been practical
[D] as to not make such a study practical
OA [spoiler]A but whats wrong with the other option??[/spoiler]
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