Select from the given diagram the one that illustrates the relationship among the given 3 classes: children below 18, persons in the electoral list, those who have voted.

According to above given question , we can say that
children below 18 are different from persons in the electoral list and those who have voted.
From above it is clear that option ( A ) represents the best relationship between children below 18, persons in the electoral list and those who have voted . As shown in given venn - diagram .