Why does the author suggest that the experiments with the wind tunnel were important? Because-
A. they allowed the Wright brothers to decrease the weight of their airplane to acceptable limits.
B. they resulted in a three-axis control for their airplane.
C. they were important in the refinement of the wings for their airplane.
D. they used the data to improve the engine for their airplane.
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সঠিক উত্তরঃ
C.
they were important in the refinement of the wings for their airplane.
Explanation:
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