What is the mass of sample c if its volume is 3.0 cubic centimeters?

The Graph for given statement is atttached below and the options are as follow,

1)  7.5 g
2)  2.1 g
3)  3.0 g
4)  21 g


            7.g g is the correct answer.

Explanation:
                   In order to find the mass of compound C at volume 3 cm³ you will have to track the X-Axis for 3 cm³. When found, draw a straight line from bottom to top unless you strike the line of compound C. Take left from the point where your pen meets line of compound C and draw a straight line from right to left. So, doing so you will find that the horizontal line meets a mass of 7.5 g. I have drawn it with White colour.