Part D Establishing causality is often a main focus of statistical studies. What is the best type of study to conduct

to establish causality? Use the situation in this task to support your answer.

Which statement is true about the local minimum of the graphed function? over the interval[-4,-2], the local minimum is 0. over the interval [-2,-1] , the local minimum is 25. over the interval [-1,4], the local minimum is 0. over the interval [4,7], the local minimum is -7