Question: In each part, identify the response variable and the explanatory variable in the relationship between the two given variables.
a. Daughter's height and mother's height.
b. Age and weight for children between the ages of 3 and 10 years old.
c. Opinion about the death penalty for persons convicted of murder and political party membership (Democrat, Republican, and so on).
d. Smoking habits and performance on a test of lung function.