For the first question about the meaning of "cholera" based on the context provided, the correct answer is:
- a deadly disease found in unsanitary water.
For the second question regarding how Malala's family changed because of the threat of the Taliban, the correct answer is:
- All of the above.
This includes both that Malala's brother began digging a grave in their yard and that Malala's father started sleeping at a friend's house.