What is a fact in the context of observations?

In the context of observations, a fact is defined as observations that are consistently repeatable by multiple observers. This means that if different people observe the same situation under the same conditions, they should report the same findings. This consistency across various observers lends credibility and reliability to the information being gathered.

Factual observations are essential in fields such as fire investigation, where accuracy and objectivity are crucial for determining the cause and origin of a fire. Establishing facts through consistent observations helps build a solid foundation for further analysis and conclusions.

The other options describe concepts that do not align with the definition of a fact. True statements based on assumptions may lack the empirical evidence that quantifies them as facts. Data that can change over time relates to variables and trends but does not represent static truths. Personal opinions that vary from person to person are subjective views that can differ widely and are not grounded in objective observation. Therefore, the correct choice emphasizes the importance of repeatable observations in establishing factual information.