[Solved] Winkler and Sheldon used the _____ to study _____ in swallows and martins. A) coefficient of relatedness; kin selection B) coefficient of relatedness; nest building behavior C) comparative method; mating systems D) comparative method; nest building behavior E) reproductive method; kin selection Violent Pornography: null Psychodynamic Catharsis Principle: null Sexually Aggressive Behaviour: null Environmental Stimuli: null