Which sentence is an example of an objective summary? a). mortimer is a witty writer who adds humor to history. b).it must have been horrible to live in elizabethan times. c).quality health care today is wonderful, but overpriced. d).modern medicine has changed dramatically since the 1500s.

The correct answer is D).Modern medicine has changed dramatically since the 1500s.

b

explanation:

- "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."