which method provides the most flexible and accurate approximation of the area under a normal curve?\na…

which method provides the most flexible and accurate approximation of the area under a normal curve?\na. using only triangles\nb. using only rectangles\nc. using only trapezoids\nd. using a combination of rectangles, trapezoids, and triangles
Answer
Answer:
d. Using a combination of rectangles, trapezoids, and triangles