An anthropologist living with a group of people and engaging in some of their rituals is using the following research method ?

A. a delay in the age of first marriage
B. the increase of cohabitation
C. the increase in the incidence of remaining single
D. all of the above

A. sex and age distribution within a population
B. the relation between population and land area
C. the ratio between a nation,s standard of living and its population density
D. the relation between population growth and food supply

A. always relates to birthrates
B. is low in Japan
C. is low in Western Europe
D. is high in industrial areas

A. crisis decisions
B. administrative foreign policy
C. legislative decisions
D. constructive foreign policy

A. lower class
B. upper class
C. middle class
D. all social classes equally