The passage suggests which of the following about the captive iguana's immune system?
Incorrect.
[[snippet]]The passage states that the immune system of captive iguanas is being enhanced, which implies that genetic modification can alter the iguana's immune system.
Incorrect.
[[snippet]]The passage tells us that the immune system of captive iguanas needs to be enhanced to make them suitable for survival in the wild. This implies that their immune system is less, not more, resilient than that of wild iguanas.
Incorrect.
[[snippet]]Nothing in the passage leads us to believe that there are other threats that prevent the captive iguana's release into the wild.
Incorrect.
[[snippet]]The passage tells us that captive iguanas cannot be released in the wild because their immune systems are still being enhanced so that they can handle natural diseases in the wild. This implies their immune system is not at all robust but rather insufficient in face of natural diseases.
Good!
[[snippet]]Since we know that the immune system of captive iguanas cannot cope with diseases in the wild but that the immune system of wild iguanas can, we may infer that the immune system of wild iguanas is more developed than that of the captive iguana.