15. A research problem is

Select one:

A. an important passage that begins a study.

B. a problem that needs to be researched.

C. the question being addressed in a study.

D. an issue or concern that is presented and justified in a study.

16. Examine the following quantitative research question: 'How does childhood obesity correlate with academic performance in elementary school children?' The independent variable is:

Select one:

A. Childhood obesity

B. Elementary school

C. Academic performance

D. Elementary school children

17. AHP is designed to solve complex problems involving

Select one:

A. single criterion

B. single alternative

C. multiple criteria

D. none of the rest is correct