Question: A researcher began a study about promoting positive impacts of media in childhood. They will test each child yearly from age 4 to 7. Each year they will also include a new group of children that enter their age range to include children of different cohorts over time. Based on lecture, which research design would address all of these factors? Need Assignment Help? Group of answer choices Sequential Cross-sectional None of these designs would meet all of these study factors. Longitudinal