Question

Kai began the research process by asking, "How does playing a musical instrument improve academic performance?" Now, he needs to modify his major research question as a result of his research. Which question narrows the focus of his research?

Answer 1

the answer is a. does playing piano improve the math scores of high school students? :D

Answer 2

He can use a certain type of instrument or certain type of academic subject to narrow down the focus of his research.