Mary Lou must complete a research project to get her associate degree. She has just one year left to finish her degree and must spend as little time and money as possible on her research. She plans to compare stress levels of 8th graders to stress levels of 9th graders. What research design should she choose in order to get finished fairly quickly and minimize her expenses?
A. Longitudinal
B. Cross-sectional
C. Microgenetic
D. Cross-sequential
My choice was B.