How does the conclusion in lines 63-69 contribute to the development of ideas in the text? (Knock knock poem) Help plss

- "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."

buenas noches would be your answer

c. with one finger is the answer

i think it is who. im not sure to be honest