Read the following context and choose the best option to answer the question.
Context: He could hear her breathing - slow , regulated . He felt that familiar pang from somewhere inside the darkness that he denied . That slow , relaxed - unknowing - breathing of prey being watched . He selfishly would miss these moments if she was turned .
Question: What may be the reason for someone being so jealous of breathing ?
Options: 
- None of the above choices .
 - They have a respiratory illness .
 - They are n't human .
 - They are an animal .


They are n't human .