engages the reader
teaches the reader something useful (a new way of thinking about the essay in question)
helps the reader to see the bigger picture that the summarized essay is a part of, and
helps you as the writer to gain a deeper understanding of the issues and arguments of the essay being summarized.
Neither. Dormant and recessive are not synonyms because their definitions are not similar, nor are they antonyms because they aren't opposites, either. Dormant means to sleep. Recessive refers to a trait that is usually masked by a dominant trait.
Hope that answered your question.
The plural form of "citizen" is "citizens" or "people of such and such place"