@ConnerKline Can you expand on how that is clear in this context? Consistent with seems to say "would mean that" in my mind. Can you clearly explain how consistent with does not imply that there is a more direct relationship?

Can I get an explanation as to why C is wrong. We know that NGF creates many more nerve cells than are required, we also know that NGF at first directs nerve cells. So it seems the passage would support that of these cells that hit the target some of them will not be needed.