Were the Extinctions That Occurred in the Last Ice Age

Multiple Choice

Were the extinctions that occurred in the last ice age more frequent among species of animals with large body sizes? A researcher gathers data on the average body mass (in kilograms) of all species known to have existed at that time. These measurements are values of

A) a categorical variable.
B) a quantitative variable.
C) an invalid variable.
D) a margin of error.