Akey message of “frederick douglass” is all human beings have a deep need for:
a. love.
b. logic.
c. instinct.
d. freedom. reset selection
mark for review what's this?

- "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."