Answer:
C. Flying boats are larger than floatplanes, and unlike floatplanes, the entire fuselage can float.
Step-by-step explanation:
Using process of elimination we know it cannot be D. That leaves us with choices A, B, and C.
Now we look at question B, it states that flying boats are floatplanes, which is not true. So we can eliminate choices B and D now.
Now we have A and C. We must choose the choice that BEST summarizes the author’s comparison of flying boats to floatplanes. A, HOWEVER states that floatplanes are larger than flying boats, which according to the passage (These seaplanes [flying boats] are usually larger and more stable on water than floatplanes are.) So now we can eliminate choice A, which leaves us with the most logical answer due to deductive reasoning, C. So therefore the answer must be C. Hope this helps.