Which sentence from the passage is the BEST example of the author's attempt to develop interest and engage his audience?
A) This is the only part of the plane that touches the water.
B) They were important tools during search-and-rescue operations.
C) Have you ever wondered how people travel to islands without any airports?
D) French engineer Henri Fabre invented the first seaplane in 1910 and a number of other designs quickly followed.