Dr Smith Believes People Who Are Very Aggressive Have Become

Dr. Smith believes people who are very aggressive have become so because of their life experiences. Dr. Goldberg believes people are more or less aggressive from birth because of genetic factors. Which of the following terms best describes an issue in human development that is highlighted by their disagreement?

A) nature versus nurture
B) cognition versus emotion
C) classical versus operant conditioning
D) cross-sectional studies versus longitudinal studies