Final answer:
The nurse should direct the task force to complete the activity of identifying environmental hazards first.
Step-by-step explanation:
The first activity that the nurse should direct the task force to complete is Identifying environmental hazards. By identifying the environmental hazards specific to the county, the task force can gain a better understanding of the potential health risks in the community. This information can then be used to develop targeted interventions and educational materials. Conducting community forums and implementing interventions can come after the hazards have been identified.