For the paragraph given below: How is the sentence enclosed in <> the main idea? Shouldn’t the sentence in bold be the one, since the rest of the following sentences are being discussed about the limb regeneration?
Ref: Skill Building (Main Idea)
They have noted not only the speed of regeneration but also the ability of these limbs to sometimes form an entirely new starfish. The rapid regeneration of starfish limbs has long intrigued marine biologists. This stands in stark contrast to previous assumptions that such regenerative capabilities were limited to simpler organisms like flatworms. Traditionally, it was argued that complex organisms have more rigid developmental pathways, making regeneration of entire bodies or complex body parts unfeasible. How then can the starfish, a more complex organism, not only regenerate limbs but also occasionally entire bodies from these limbs? <Blackwood suggests that starfish possess unique clusters of stem-like cells that are activated after injury, which are not as restricted as those in other animals.> He posits that these cells can follow various developmental pathways, not just recreating lost limbs but also laying the groundwork for new starfish to form, providing a potential evolutionary advantage in their ability to survive and propagate after injury.