Based on the scenario above, the conditioned response is Duke's bark. The conditioned response is defined as the automatic response that is associated with the previously neutral stimulus that yield a response. Duke's bark is the conditioned response in the scenario above.
Because she is stuck in the costume.
If Cathy blames her history teacher for her poor performance on a history test she is most likely engaging in: Self serving bias
Self serving bias refers to a way of thinking that always perceive ourself in a positive manner. People with self-serving bias often willing to over look their own mistakes in order to avoid the feeling of failure, which cause them to constantly blame other people for their own mistake.