Networks of blood vessels in bats' wings serve only
to disperse heat generated in flight. This heat is
generated only because bats flap their wings. Thus
paleontologists' recent discovery that the winged
dinosaur Sandactylus had similar networks of blood
vessels in the skin of its wings provides evidence for
the hypothesis that Sandactylus flew by flapping its
wings, not just by gliding.
In the passage, the author develops the argument by
(A) forming the hypothesis that best explains
several apparently conflicting pieces of evidence
(B) reinterpreting evidence that had been used to
support an earlier theory
(C) using an analogy with a known phenomenon to
draw a conclusion about an unknown
phenomenon
(D) speculating about how structures observed in
present-day creatures might have developed
from similar structures in creatures now extinct
(E) pointing out differences in the physiological
demands that flight makes on large, as opposed
to small, creatures

OA is C .. but I want to know what type of Qs is this..