It reeked , and not like earth - a tarry , acrid scent . He stayed still a moment , trying to assess his situation , and his last memories . Falling asleep while Kisame watched - but he 'd been falling asleep on loam , and this harsh , hard ground beneath his cheek was anything but loam . Add to that he could n't sense Kisame 's chakra anywhere and he had n't woken .
According to the above context, choose the best option to answer the following question.
Question: What may be the reason he was n't sleeping on loam ?
Options:
- He is suddenly allergic to it .
 - He was kidnapped .
 - He was n't at home .
 - He could n't bring it with him .


He was n't at home .