You are presented with the question "what do some parasites do to their hosts?" and the following answer choices: 
- Move to another area
 - harm them
 - leeches
 - Damages them
 - impregnate
 - cause their death
 - They may not survive.
 - ticks

Now knowing that some parasites kill their host, but most do not and killing means death, choose the best answer.


 

      cause their death   