You are presented with the question "What have permeable skin that easily absorbs substances from the environment?" and the following answer choices: 
- crocodiles
 - ferns
 - animals
 - humans
 - toads
 - viruses
 - a fish
 - bats

Now knowing that amphibians have permeable skin that easily absorbs substances from the environment and frogs, toads and salamanders are amphibians, choose the best answer.


 

     toads    