Course of Action I: This is a valid response. Investigating the causes of the increase in criminal activities is important to understand why it happened and to formulate effective responses. Thus, this course of action follows.
Course of Action II: This course of action is also strong. Taking adequate precautions for future festival seasons is necessary to prevent a recurrence of similar situations, making it a proactive approach.
Course of Action III: Although it might seem reasonable to arrest known criminals before festival seasons, this action may not be practical or feasible and doesn’t directly address the immediate issue of the spurt in criminal activity.
So, the correct option is (B): Only I and II follow.