A wider tree ring typically indicates that the weather was warm and wet during that year. Conversely, a thinner tree ring usually suggests that the conditions were harsher, which could mean it was a colder and drier year. So, the correct correlation is:
- Wider tree ring = warm and wet weather
- Thinner tree ring = cold and dry weather
In summary, the correct answer is: It indicates that the weather that year was warm and wet.