Scientist: It seems likely that the earliest dinosaurs to fly did so by gliding out of trees rather than, as some scientists think, by lifting off the ground from a running start. Animals gliding from trees are able to fly with very simple wings. Such wings represent evolutionary middle stages toward developing the large wings that we associate with flying dinosaurs. Each of the following, if true, strengthens the scientist's argument EXCEPT: ['Early flying dinosaurs had sharp claws and long toes suitable for climbing.', 'Early flying dinosaurs built their nests at the base of trees.', 'Early flying dinosaurs had unusual feathers that provided lift while gliding, but little control when taking flight.', 'Early flying dinosaurs lived at a time when their most dangerous predators could not climb trees.']