Suppose We Want to Know How the Population of an Anthill

Multiple Choice

Suppose we want to know how the population of an anthill varies over time.It is difficult to make a direct observation of how many ants are in an anthill, so which of the following would be the best proxy variable?

A) the number of ants seen each day in a nearby house
B) the size of the ants
C) the speed at which a nearby piece of fruit disappears
D) the age of the anthill
E) the rate at which ants exit the anthill