Answer:
increases in environmental mastery.
Step-by-step explanation:
Cross-sectional study is defined by observational research, which analyzes data collected over a period of time. This survey can be in a sample population or in a predefined subset. This type of study is also known as cross-sectional study, cross-sectional study and prevalence study. The data collected in the cross-sectional study are from similar people in all variables. Except for the variable being studied.
Regarding middle age, cross-sectional studies are characterized by increases in the environmental domain as a shared feature among participants and research in this approach.