What shows the most accurate forecasting of temperature changes according to climate models?

The choice that indicates the most accurate forecasting of temperature changes according to climate models is using both natural and anthropogenic forcings. This approach incorporates all significant factors that influence the Earth's climate system, including both naturally occurring processes, such as volcanic eruptions and solar radiation variations, as well as human activities, like greenhouse gas emissions and land use changes.

The combination of these two types of forcings allows for a more comprehensive understanding of climate dynamics. Climate models that factor in both natural and human-induced changes can more accurately replicate past temperature patterns and project future warming scenarios. This is crucial because anthropogenic activities have substantially altered the natural greenhouse effect and are a significant driver of current climate change.

By not considering one type of forcing, the models would potentially overlook critical aspects of climate variability and trends, leading to less reliable predictions. Thus, utilizing both natural and anthropogenic forcings provides a fuller picture of the factors impacting global temperatures, resulting in more precise forecasts in climate models.