When Khaled includes the graphic in his presentation on climate change, it is essential to provide certain key information to ensure the credibility and relevance of the data presented. The piece of information that must be included with the graphic is "its publisher and date of publication."
Including the publisher and the date of publication helps to:
1. Establish Credibility: Viewers can assess the reliability of the source from which the graphic originates.
2. Provide Context: Knowing when the data was published helps in understanding the temporal context and relevance, ensuring that the data is up-to-date.
3. Enable Verification: Audience members who wish to delve deeper into the data can reference the publisher and look up the original source material.
Therefore, among the options provided, ensuring that the graphic includes its publisher and the date of publication is crucial for a well-supported presentation.