Final answer:
Having two limb girdles is not an adaptation for living out of water in reptiles. Adaptations such as scales and waterproof skin prevent water loss, while lungs are necessary for air breathing.
Step-by-step explanation:
The adaptation that does NOT enable reptiles to live out of water among the options provided is B) having two limb girdles. Reptiles have scales on their skin (A) which contain keratin and waxy lipids to prevent water loss. They have waterproof skin (C) that is sealed against water loss, and they possess lungs for breathing air (D), as reptiles cannot respire through their skin like amphibians. The presence of two limb girdles is not an adaptation specifically related to living out of water; it is a structural feature for movement that can be found in various terrestrial animals.