Answer:
The controlling idea is included.
Central ideas are stated in one’s own words.
Ideas are stated subjectively to include the writer’s opinion.
Paraphrasing creates a condensed version of the text.
Step-by-step explanation:
A summary is a shorter version of a content and it should represent the content's and the author's main ideas in a shorter, condensed way. That's why there will most likely be plenty of paraphrasing.