What physical cue demonstrates a facial expression of sadness?

The correct answer highlights the specific facial expression commonly associated with sadness. When someone is experiencing sadness, one of the predominant cues is the inner eyebrows being pulled together and raised. This action contributes to a frowning effect and emphasizes the feeling of sadness. The raising of the inner eyebrows tends to create a vulnerable, pleading appearance, which can signify distress or sorrow more effectively than any other facial expression.

In contrast, the other options do not accurately represent sadness. For instance, a wrinkled nose often correlates with disgust rather than sadness, while upwardly pulled lip corners typically indicate happiness or a smile, which is the opposite of sadness. Understanding these subtle but powerful connections between facial expressions and emotions is crucial in Gottman's Method, as they contribute to effectively recognizing and addressing emotional cues within relationships.