When Maggie Wanted to Find Out How Children Were Punished

Multiple Choice

When Maggie wanted to find out how children were punished at home,she conducted separate interviews of individual children and their parents.An advantage of this research design is that

A) Maggie needed to interview only a few people to get a valid research sample.
B) Maggie needed to interview each set of parents and children only once.
C) Maggie could assess whether parents and children gave conflicting reports.
D) it revealed causal relationships.