Final answer:
Isaac's action of knocking over an elderly woman due to rushing is best categorized as absentmindedness, not involving any aggressive intent as seen in hostile or instrumental aggression.
Step-by-step explanation:
Types of Aggression
Isaac knocking over an elderly woman as he rushes out of the BART train is an example of d) absentmindedness. This incident doesn't appear to involve any intent to cause harm, which rules out both hostile aggression and instrumental aggression. Hostile aggression is driven by anger and the intent to cause pain, while instrumental aggression is motivated by a specific goal but does not necessarily involve a desire to cause pain. Absentmindedness, on the other hand, relates to a lack of attention or mindfulness to one's surroundings and actions, which fits the scenario provided as Isaac's behavior was likely unintentional and not driven by any aggressive intent.