Case studies are usually sources of hypotheses, rather than tests of hypotheses

__________ has/have contributed to the number of African-American never-married, single-mother families

A) Greater equality for women and more income-earning opportunities B) Traditions dating back to the slave era C) The consequent inability of many black men to support a family D) The widespread availability and generous benefits of child-welfare services

Many ethnic minority parents without extensive schooling prefer a(n) __________ style of communication when completing tasks with children

A) hierarchical B) knowledge-training C) objective D) collaborative