Passage A: Passage A praises wildlife corridors for reconnecting populations isolated by roads and development. By permitting movement and breeding across patches, corridors can reduce the risks associated with small populations. The passage treats connectivity as the central design objective. Passage B: Passage B accepts the value of connectivity but warns that a corridor is not merely a line between two protected areas. [B1] If the connecting land lacks food, shelter, or safe crossings, animals may avoid it or suffer higher mortality within it. [B2] Connectivity on a map can therefore overstate functional connection. [B3] Designers must evaluate habitat quality along the route as well as the locations it joins. [B4] Passage B makes local conditions part of what successful connectivity means. Removed sentence from Passage B: "That requirement refines rather than reverses Passage A’s recommendation." Which placement in Passage B best clarifies how the two passages relate?