Which of the following best defines an objective summary?

An objective summary is best defined as a summary produced without bias or opinion. This is because the essence of an objective summary is to convey the main ideas, themes, and essential points of a text while avoiding any influence from the summarizer’s personal beliefs or feelings. By focusing solely on the content presented in the original work, an objective summary allows readers to grasp the author's message without being swayed by subjective interpretations or emotional responses.

The other choices describe different types of summaries that do not fit the definition of objective summarization. A summary containing personal opinions introduces bias, while a detailed analysis goes beyond summarizing and engages in interpretation. Likewise, a long interpretation of the text suggests a focus on in-depth commentary rather than a concise, neutral overview of the main ideas. Therefore, the distinguishing characteristic of an objective summary is its impartiality, which is reflected in the correct choice.