Which of the following methods is primarily qualitative in nature and seeks in-depth insights?

Contextual Inquiry is primarily qualitative in nature because it involves observing and interviewing users in their natural environment to gain deep insights into their experiences, behaviors, and motivations. This method allows researchers to understand the context in which users interact with a product or service, providing richer, more nuanced information than what is typically gathered through quantitative methods.

In Contextual Inquiry, the researcher participates in the user's activities while asking questions, which fosters a dialogue that can uncover insights that standardized questions may not reveal. This approach emphasizes understanding the user's perspective and the specific circumstances around their use of a product.

In contrast, structured interviews, while they do gather qualitative data, often follow a fixed set of questions that can limit the depth of insights. Closed surveys focus on quantitative data, collecting responses that can be easily measured and analyzed statistically but do not provide the depth of understanding that qualitative insights do. Quantitative analysis, like closed surveys, relies on numerical data to identify patterns and trends, prioritizing breadth over depth. Therefore, Contextual Inquiry stands out as a method specifically designed for obtaining in-depth qualitative insights.