Katarina is interested in the relationship between attention deficit disorder and behavioral problems in school. she believes that children's socioeconomic status may affect her results, so she included two groups of children and made sure each child in one group came from a home with the same level of income as each child in the other group. what technique is this?

answer; /// i do believe that the correct answer is (d) cooperative play; /// good luck

this headline suggests that midterm congressional   elections are at the corner and trump administration wants to activate his base by vowing to clamp down on immigrants and immigration as trump had said during his election campaign around two years ago. when a baby is born in usa, the baby becomes citizen of usa for 85 years and trump wants to end this rule of birthright citizenship to control illegal immigration and this what he said in an interview""we’re the only country in the world where a person comes in and has a baby, and the baby is essentially a citizen of the united states for 85 years, with all of those benefits,” "

answer; adoption agencies tend to place separated twins in similar homes;