The data presented by a pie chart is best used when comparing significantly different groups of data.
The correct option would be the one in which all the relative frequencies are different, and they show a significant difference or variation between one another.
From the options provided, the group of relative frequencies that satisfies the problem is:
[tex]17\%,71\operatorname{\%},3\operatorname{\%},9\operatorname{\%}[/tex]
OPTION A is correct.
