A. the things that happen by themselves
B. Are arranged knowingly
C. both a and b
D. None of these
A. probability sampling
B. non-probability sampling
C. cluster sampling
D. using the Christmas vacation constructively
A. regenerating cities in economic decline
B. turning industrial landscapes into tourist attractions
C. selling sites and images through the symbolic economy of media advertising
D. all of the above
A. foster the expectation that order will prevail in the classroom
B. leave discipline up to the individual teacher
C. emphasize the “whole student” over academic concerns
D. foster an atmosphere in which students are carefully monitored to ensure that they meet their obligations
A. social inequality
B. social change
C. social solidarity
D. social conflict
A. the genes used cannot spread into the wider environment
B. they involve transplanting genes from one organism to another
C. we can say with certainty that they are risk-free
D. they have been accepted by consumers in all countries
A. internal consistency
B. correlation
C. theory
D. time order
E. elimination of spuriousness