In which situation would a savings account be the best investment to earn interest?
saving for retirement in 20 years
saving to buy a new car in three years
saving to buy a new house in seven years
saving to easily access the money when needed

Jamie is conducting a study of hyperactive children. he recruits two children identified by teachers as hyperactive and takes a detailed history by interviewing the child and the child's parents over a period of several days, looking for patterns in the child's early experiences that may have contributed to the child's hyperactivity. jamie's research plan is referred to as the