Answer:
a cross sectional study
Explanation:
Cross-sectional study: In psychological research, the term "cross-sectional study" is also referred as transverse study, cross-sectional analysis, and prevalence study and is described as one of the different types of observational studies that generally analyzes various data from a particular population including participants or else a 'representative subset' during a particular point in time.
In the question above, Professor Juarez will be conducting a cross-sectional study.