Final answer:
The statements given relate to Biology with an emphasis on the scientific method and evolutionary theories. The incorrect hypothesis being discarded is part of the scientific process, not its failure.
Step-by-step explanation:
The question stems from a scenario-based preference, but to align it with a relevant scientific discipline, the underlying topic relates to Biology, particularly to the concepts of evolution and the scientific method. When referring to the statements provided for the context, both relate to evolutionary theories but with different conceptions.
The statement C, which suggests animals stretch their necks to grow them longer, hints at a Lamarckian evolutionary concept, which is largely discredited today. Statement D is more in line with Darwinian evolution, where traits beneficial to survival are naturally selected for within environments. The discard of Scientist A's hypothesis is not indicative of the scientific method's failure but rather of its success in eliminating inaccurate theories through experimentation and evidence gathering.