The article presents a detailed account of the death of Miller Gardner, citing the Judicial Investigation Agency (OIJ) of Costa Rica as the source for the cause of death being carbon monoxide inhalation. The article accurately reports the toxicology results and the carboxyhemoglobin saturation level of 64%, which is deemed lethal, and includes a quote from OIJ director Randall Zúñiga confirming these findings. The mention of the machine room as a potential source of contamination aligns with the investigation details provided. However, the statement from the Arenas Del Mar resort expressing uncertainty about the cause of death at the time could have been further explored for additional verification. The story also accurately notes the initial speculation about food poisoning and the subsequent ruling out of this cause, which is consistent with the investigative process described.

The article provides a balanced perspective by including statements from both the OIJ and the family of Miller Gardner. It presents the scientific findings alongside the personal impact of the tragedy, offering a comprehensive view of the situation. However, the perspectives from the Arenas Del Mar resort are limited to a single statement of condolences and uncertainty about the cause of death. Including more information from the resort or other stakeholders involved in the investigation could have enhanced the balance of viewpoints. The article does not show overt favoritism towards any party but could benefit from a broader range of perspectives, especially from independent experts or additional family statements.

The article is well-structured and clear, presenting information in a logical order that is easy to follow. It begins with the key facts about Miller Gardner's death and the confirmed cause, then delves into the investigation details and family statements. The language used is straightforward, and the scientific explanations are accessible to a general audience, aided by quotes from authoritative sources. The tone remains neutral and respectful, especially when discussing the personal aspects of the tragedy. Overall, the article effectively communicates the necessary information without unnecessary complexity.

The article relies heavily on information from the Judicial Investigation Agency (OIJ) of Costa Rica, a credible and authoritative source for the investigation details. The inclusion of direct quotes from OIJ director Randall Zúñiga adds to the reliability of the information presented. The article also references the National Institutes of Health for scientific explanations, which is a reputable source. However, the lack of additional sources, such as independent experts or further comments from the resort, slightly limits the depth of source variety. Overall, the primary sources used are credible and relevant to the story.

The article is transparent in its disclosure of the sources of information, specifically citing the OIJ and providing direct quotes from its director. It explains the basis for the claims made, particularly the scientific findings related to carbon monoxide poisoning. However, the article could improve transparency by providing more context on the investigation process or potential conflicts of interest, such as the resort's role in the incident. While the article does well in explaining the scientific aspects, more transparency in the methodology of the investigation and the resort's response could enhance the reader's understanding of the situation.