Question

when might you use a pie chart?
a. to show changes over time
b. to track the frequency of data
c. to compare different groups
d. to represent parts of a whole

Explanation:

A pie chart is a circular statistical graphic which is divided into slices to illustrate numerical proportion. Each slice represents a proportion of the whole. So, it is used to represent parts of a whole.

Answer:

d. To represent parts of a whole