While Studying the Effects of Overcrowding on Aggressive Behavior in Elephants

Multiple Choice

While studying the effects of overcrowding on aggressive behavior in elephants, Dr. Webster made sure to have his research assistants gather data before, during and after the breeding season. Her concern was probably due to

A) a limited sample population.
B) a possible seasonal variation effect.
C) mediation of expectancy.
D) a possible attrition effect.