I'm pretty sure it's c but don't quote me on it
Answer:
One way to look at the differences between them is by looking at the effects of having multiple wings. ... Due to interference effects, the bi- and tri- planes actually require higher wing area to produce the required lift. Also, the drag is also higher than the monoplane, which gets more pronounced as the speed increases.
Explanation:
<u><em>hope this helps</em></u> :):):):):):):):)
10 is obviously the answer
D. George Washington
wall I am not so sure but this is one of the hard ones for a 5th grader!