Which phenomenon is the best argument against the notion that the organization of the brain is predetermined genetically?

Fifteen-year-old Kadian lives with her mother, sister, and two brothers in a small apartment in the city. Her mother works full-time but still struggles; her yearly income is below the federal poverty line

According to research, Kadian will most likely A) have lower academic achievement. B) be at an increased risk for substance abuse. C) have a mother who uses power-assertion as a discipline tactic. D) received inadequate heath care if she or her siblings becomes sick.

Researchers have studied a group of nurses over several decades, collecting data on a variety of health and lifestyle issues. This type of research is called

a. longitudinal research. b. cross-sectional research. c. trend research. d. multiple baseline research.