In underdeveloped countries in Africa, about what percentage of women die from complications of pregnancy and birth?

Chronic and excessive use of alcohol or benzodiazepines may lower the brain's production of:

a.) Endorphins b.) Dopamine c.) GABA d.) Anandamides

Which of the following types of parent–child play is most strongly linked to social competence in the child?

A) parent-directed play B) mother–son play C) mother–daughter play D) father–daughter play