Final answer:
An objective summary should be concise, maintain objectivity without including reader's opinions, and accurately encapsulate the original content's main ideas and scope.
Step-by-step explanation:
An objective summary should be brief, accurate, and maintain an unbiased point of view. This means it should include the main points and any critical supporting details that are essential to convey the original text's meaning without the inclusion of the reader's opinions. An effective summary allows the reader to understand the original text's scope and main ideas without needing to read it in full. When responding to an informational text, it's crucial to base summaries and inferences on accurate facts, ensuring that opinions presented are based on expertise and are not influenced by emotion. Therefore, the most accurate option here would be (b) Be brief, accurate, and objective/unbiased as it captures the essence of summarizing while maintaining objectivity.