Social Class Is Not a Variable That Provides Clear or Meaningful

Social class is not a variable that provides clear or meaningful explanations of the effects of parenting styles on socialization because

A) it varies for each family from year to year.
B) lower-socioeconomic families tend to require payment for participating in research studies,making these procedures costly to researchers.
C) socioeconomic status is often confounded with other variables,such as health care,nutrition,and education experiences.
D) the defining characteristics of parenting are different for each socioeconomic class.