Da Vinci's vision of a flying contraption was dismissed for centuries as a pipe dream; instead, many scholars attribute several critical innovations that actually led to manned flight with its principles.

A) was dismissed for centuries as a pipe dream; instead, many scholars attribute several critical innovations that actually led to manned flight with

B) had been dismissed for centuries as a pipe dream, but from which, many scholars have attributed several critical innovations that actually led to manned flight to

C) had been dismissed for centuries as a pipe dream, but from which, many scholars attribute several critical innovations that actually led to manned flight with

D) was dismissed for centuries as a pipe dream, but many scholars attribute several critical innovations that actually led to manned flight to

E) had been dismissed for centuries as a pipe dream; instead, many scholars have attributed several critical innovations that actually led to manned flight to


OA D

Source: EMPOWERgmat