Question

identify the type of observational study. a researcher plans to obtain data by examining the financial transactions of victims who perished in a tsunami. choose the correct type of observational study below. o a. retrospective o b. cross-sectional o c. prospective

Explanation:

A retrospective study looks at past data (here, financial transactions of victims who already perished in a tsunami, so data from the past). A cross - sectional study looks at data at a single point in time across different groups, and a prospective study follows subjects forward in time (which is not the case here as the victims are already deceased). So the study is retrospective.

Answer:

A. retrospective