Researchers asked high school students if they previously had musical training and then administered an intelligence (1Q) test to each student the same day

Researchers asked high school students if they previously had musical training and then administered an intelligence (1Q) test to each student the same day. Students who had musical training scored higher on the intelligence test than did students who had no musical training. The researchers conclude that giving children musical training will cause an increase in intelligence. Taking into account the nature of the design and results obtained, what is the best description of their conclusion? O Their conclusion is basically incorrect because they divided people into groups based on musical experience. Their conclusion is correct because they manipulated intelligence properly. O Their conclusion is basically incorrect because they cannot infer causation using this method O Their conclusion is basically correct because music and intelligence are related in the expected way.