Which of the following is listed as an example of exploratory research?

• A. Cross-sectional study
• B. Cohort study
• C. Randomized controlled trial
• D. Case report

Answer: (B)

Exploratory research aims to uncover potential relationships and generate hypotheses, often using observational designs that let you observe what happens over time without testing a specific intervention. A cohort study fits this well because it follows a group of people who are exposed to something and a comparison group that isn’t, over a period of time, to see what outcomes occur. This setup lets you notice temporal sequences and associations between exposure factors (like activity level, treatment, or risk factors) and outcomes, which can spark ideas for future, more focused research or interventions.

Think of it this way: you’re looking to identify possible factors that seem linked to a future outcome, rather than proving that a treatment works. That’s why a cohort study is a solid example of exploratory research among the options. In contrast, a cross-sectional study gives a single-time snapshot and is more descriptive, a case report describes a unique or rare instance, and a randomized controlled trial tests a specific intervention with control, which aligns more with hypothesis testing and causality than exploration.