You are presented with the quiz "Animals may leave an environment during which event?" 

But you don't know the answer, so you turn to your teacher to ask for hints. He says that "if the amount of available food and water decreases in an environment then animals may leave that environment to find food and water" and "famines occur when there is a general shortage of food". 

So, what's the best answer to the question?


 

       Famine    