What characterizes something that is "somber"?

The term "somber" is used to describe a mood or tone that is serious, grave, or gloomy. When something is characterized as somber, it often conveys feelings of sadness, reflection, or a lack of brightness, both literally and figuratively. This understanding connects to contexts where somberness might be expressed, such as during a serious event or in a piece of art that evokes deep emotional responses.

In contrast, the other options present more positive or light-hearted characteristics. Options that refer to brightness, cheerfulness, playfulness, or liveliness denote qualities that are quite opposite to what "somber" describes. Therefore, the choice that aligns with the nature of being somber is the one that reflects a serious or gloomy tone.