Which of the following is a qualitative research method?

Qualitative research methods are designed to gather in-depth insights and understanding of human behavior, experiences, and social phenomena. Interviews are a key qualitative method because they allow researchers to explore participants' thoughts, feelings, and motivations in a detailed and open-ended manner. During an interview, the researcher can ask follow-up questions, probe deeper into responses, and facilitate a conversational flow that brings out rich, descriptive data. This depth of understanding is essential in qualitative research, as it focuses on the subjective aspects of the participants' perspectives.

In contrast, surveys tend to collect quantitative data through closed-ended questions, which provide statistical information rather than in-depth understanding. Experiments are typically structured to test hypotheses in a controlled setting and are more quantitative in nature, focusing on measurable outcomes. Statistical analysis involves processing numerical data to find patterns and relationships, which again skews towards quantitative research rather than the qualitative insights sought in methods like interviews.