Answer:
Including too much information
Explanation:
Out of all the options, a common mistake that people make when writing summaries is including too much information. This is true because crediting the author's words and finding the main idea are and should be included in summaries since they are very significant. Also, writing their own notes would only benefit the person and the summary would not be affected. On the other hand, including too much information can bore the reader and make the summary too confusing. This is why, the correct answer is including too much information.
Hope this helps!! :)
