D would be the best answer for this question
Answer: it is an objective summary because it explains events without offering an opinion.
Explanation: Objective summary is the explanation of an events with the exclusion of irrelevant details or personal opinion. It is a short statement or paragraph that summarize the major ideas or plot point. When writing an objective summary, the central ideas from the passage or article should be focused on and enough should be written to express the central idea. It is usually a shortened text based on your understanding of the full text theme and without the incorporation of your own personal feeling or idea.
<span>. c.Scientists studied the trapping of gases in the atmosphere.</span>
