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.
Which of the following, if true, most seriously weakens the argument in the passage?
(A) Sandactylus' wings were far more similar to the wings of bats than to the wings of birds.
(B) Paleontologists do not know whether winged dinosaurs other than Sandactylus had similar networks of blood vessels in the skin of their wings.
(C) The mechanism used by bats for dispersing heat in flight could, in principle, work for much larger flying creatures, such as Sandactylus.
(D) Not all the bats that use the mechanism described in the passage for dispersing heat in flight live in climates similar to the climate in which Sandactylus lived.
(E) Other winged dinosaurs that flew only by gliding had networks of blood vessels in the skin of their wings similar to those that Sandactylus had.
OA E
Source: Official Guide
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Networks of blood vessels in bats’ wings serve only to dis
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Option A :- INCORRECT
This option supports the arguments because it was discovered that sandactylus has similar network of blood vessel in the skin of its wings to that of the bats, due to this, it doesn't weaken the argument.
Option B :- INCORRECT
This option if true, isn't in contrast to the argument itself and doesn't undermine the argument because the statement was released based on their discovery and what is not discovered can't be known.
Option C :- INCORRECT
The option totally supports the argument and doesn't weaken it in anyway.
Option D :- INCORRECT
If true that the bats that use the earlier said mechanism for dispersing heat in flight line in climates in which sandactylus lived, it is still in agreement to the argument and doesn't weaken it.
Option E :- CORRECT
Well, we don't know if other winged dinosaurs that fly by gliding also use this mechanism described in the passage because the argument isn't concerned with just any other winged dinosaur sandactylus that has similar networks of blood with bats, this option doesn't support the argument and therefore weakens it.
This option supports the arguments because it was discovered that sandactylus has similar network of blood vessel in the skin of its wings to that of the bats, due to this, it doesn't weaken the argument.
Option B :- INCORRECT
This option if true, isn't in contrast to the argument itself and doesn't undermine the argument because the statement was released based on their discovery and what is not discovered can't be known.
Option C :- INCORRECT
The option totally supports the argument and doesn't weaken it in anyway.
Option D :- INCORRECT
If true that the bats that use the earlier said mechanism for dispersing heat in flight line in climates in which sandactylus lived, it is still in agreement to the argument and doesn't weaken it.
Option E :- CORRECT
Well, we don't know if other winged dinosaurs that fly by gliding also use this mechanism described in the passage because the argument isn't concerned with just any other winged dinosaur sandactylus that has similar networks of blood with bats, this option doesn't support the argument and therefore weakens it.
