Question

george analyzes and compiles the results of 127 previously published studies about the occurrences of drunk driving in major cities. which type of research has george conducted? a. a survey b. a case study c. a controlled experiment d. a meta - analysis

Explanation:

A meta - analysis is a research method that involves analyzing and compiling the results of multiple previously published studies. George analyzed 127 previously published studies, which fits the definition of a meta - analysis. A survey typically involves collecting new data from participants (e.g., questionnaires or interviews), a case study focuses on in - depth analysis of a single case or a few cases, and a controlled experiment involves manipulating variables in a controlled setting to observe outcomes, none of which match George's work.

Answer:

D. A meta - analysis