Use the Following to Answer the Questions Below

Use the following to answer the questions below:
Students in a small statistics course collected data to determine if the length of the forearm could be used to predict the length of the foot (both measured in centimeters) . Their data are displayed in the provided table.

-Based on their goal (to predict foot length from forearm length) , which variable is the explanatory variable?

A) Forearm length
B) Foot length