Tracy is writing promotional (marketing) information for a new family-focused recreational facility. One piece of useful information she found was research showing that preschool children s physical activity was enhanced by:

i would say b. research typically uses a variety of sources

semi-desert lowlands, hope this !

i believe the answer is: description

description refers to the goal of psychologist to identify the phenomenon that being observed. this goal is being actualized by collecting data/information from various clues that observed through the phenomenon. this goal must be accomplished before pyschologist able to create methods of treatment.