Before the speaker was stranded, he probably a) wants to find . b) worked in an office. c) explores islands for a living. d) wants to live on the island permanently.

Answer is B

Explanation:

Because he worked in an office

this answer was editing it cause i couldn't delete!

- "the basic difference between keywords and subjects is that subjects (or "subject headings") have been predetermined, while keywords have not. a keyword is an easy place to start because you can use any word that seems to fit your search; this is called "natural language" searching."