Final answer:
The dependent variable in Bandura's study was the type of aggression displayed by children after observing an adult model's behavior towards the Bobo doll.
Step-by-step explanation:
In Bandura's study of the effects of modeling on aggression, the dependent variable was b) Type of aggression displayed. The dependent variable is what is being measured in an experiment and is expected to change as a result of the experimental manipulation. In the case of Bandura's experiment, the children's aggressive behaviors towards the Bobo doll after observing an adult model act aggressively or non-aggressively was what was being measured. Consequently, the type of aggression displayed by the children is the outcome that depended on whether they had observed aggressive modeling.