Question: Some animals are very rare. For example, there are very few Siberian tigers. If the only Siberian tigers left are female, what will most likely happen?

  Options: 
 A. The females will find another type of male animal to mate with and produce more Siberian tigers.
 B. The females will mate with each other and produce more Siberian tigers.
 C. The females will only be able to produce female Siberian tigers.
 D. The females will not be able to produce more Siberian tigers, and they will die out. 
Answer: D