The true statements among the options provided are:
- A summary should be objective.
- A summary is short and shouldn't include minor details from the text.
- A summary should convey the central idea of the text.
The incorrect statement is that "A summary should include direct quotes." Generally, summaries paraphrase the original text instead of using direct quotes unless specified otherwise.
In summary, the true statements are:
- A summary should be objective.
- A summary is short and shouldn't include minor details from the text.
- A summary should convey the central idea of the text.