Answer
Follow the work through provided below
Work Step by Step
A) Shade the whole area covered by circle "a" as shown.
B) Shade the area of intersection between circle "a," "b," plus the intersection of the three circles "a" "b" and "c" as shown.
C) Shade the whole area inside and outside the circles except for the area that circle "a" that doesn't intersect with any of the other two circles.
D) Shade the whole area covered by circles "a" and "b" as shown