Which of the following is an example of qualitative data relevant to nutrition in a community?

Qualitative data provides insights into the characteristics, attributes, and experiences that cannot be quantified easily. In the context of nutrition in a community, understanding "the people's food habits and patterns" is crucial as it reveals how individuals select, prepare, and consume food. This type of data highlights cultural practices, preferences, and behaviors, offering rich contextual information that can inform public health interventions and educational programs.

In contrast, the other choices represent quantitative data. For example, households with water-sealed toilets can be measured and counted, providing a numerical representation of sanitation facilities. Similarly, the number of underweight children constitutes a quantifiable figure that can indicate nutritional status within a population. Total household income is also a numerical value that can be used to assess economic factors influencing nutrition. While all these aspects may play a role in understanding the broader picture of community health, the specific focus on food habits and patterns distinguishes option B as qualitative data that captures the nuances of dietary practices in the community.