The correct answer is C you know this by looking along the x axis and seeing that x represents "cups of flour". Then do the same thing with the y axis and you know y represents "number of cookies"
Now that you know what x and y represent the graph is easier to understand. The point (1,24) shows you that for everyone cup of flour 24 cookies are produced. If the point had been (2,50) then the answer would be 22 cups produces 50 cookies.