for the second part I just need you to do D the graph is the corner right

The figure is the graph of f; the derivative of a function f. On what open interval(s) is the function f increasing? Select all that apply. (0,x1)(x1,x2)(x2,x3)(x3,x4)(x4,x5) (a) Sketch a graph of P(t) for one year. (b) Use the graph to decide when in the year the population is a maximum. What is that maximum? 4 deer (c) Use the graph to decide when the population is decreasing fastest. (d) Eitimate roughly how fast the population is changing on the first of July