video1.0<iframe src="https://www.loom.com/embed/4c4625448e314766b437b87d283dcfef" frameborder="0" width="1280" height="960" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>9601280Loomhttps://www.loom.com9601280https://cdn.loom.com/sessions/thumbnails/4c4625448e314766b437b87d283dcfef-00001.jpg159p: According to the passage, the earlier studies that Bhullar consulted were important primarily because they a: A) confirmed when beak formation in an embryonic bird typically begins.; B) identified particular genes that could initiate beak formation in birds.; C) proved that beak formation in birds was a response to external conditions.; D) pinpointed the primary gene that activates the development of a bird's beak.