Question: John's took his appointment book with him to a checkup but couldn't find it anywhere. He looked and he looked but he didn't know where it was.  It wasn't until he bought a new one, went home, took a shower that he found it.  Where was it?
Options:
- office supply store
- wallet
- doctor's office
- handbag
- pocket

Explain why a human would choose "pocket" to answer the question above:


rivers flow trough valleys.