To summarize is

a.) combine concepts or ideas into a whole.

b.) restate something in your own words.

c.) bring something back to mind.

d.) shorten an examplanations by using just the main points

D.) shorten an explanations by using just the main points

Explanation:

Summarizing refers to the process of expressing important ideas and facts in a precise and clear form. Summarizing involves the process of adding all the essential details of the text so that the summary does not seem abrupt. The main and important points are summarized. It is the work of expertise to include details from the text in the summary. It is a condensed form of the original text.

- "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."

the answer would be, she updates her online profiles regularly and participates in work-related online discussions.