Answer:
D. An evaluation of the event described in the text
Step-by-step explanation:
A summary is a text that represents a shortened version of another text and contains its main ideas. What every summary should contain is a clear description of the central idea and relevant supporting details. There shouldn't be too much detail, though, as the purpose of a summary is to relay the most important ideas. Everything should be written in complete, understandable sentences.
What shouldn't be included in an objective summary is an evaluation of the event described in a text. Objective summaries do not contain any personal feelings or beliefs, and thus, evaluations are not needed.