What does King compare to the unrecognized people who have been an important part of making the civil rights movement happen?
O A. A journey around the world
B. The pilot of an airline
C. An airline's ground crew
D. A modern jet plane

yes yes it does !

i think that it is (line 11)

. a function is a relation in which each input has only one output. in the relation , y is a function of x, because for each input x (1, 2, 3, or 0), there is only one output y. x is not a function of y, because the input y = 3 has multiple outputs: x = 1 and x = 2.