The portion of the circle shaded blue is 3/4. Option A
Since three sides of the circle are shaded blue, we can calculate the portion of the circle that is shaded blue by considering the ratio of the blue-shaded region to the entire circle.
Then, we have that to determine the fraction of the entire circle, we use the ratio of the blue-shaded portion to the total:
Total sides = 4
The blue -shaded part = 3
Then, we have that;
= 3/4 is the portion