Final answer:
Stabilizing community lifelines is the primary effort during earthquake preparedness.
Step-by-step explanation:
The correct answer to the question is A) Earthquake preparedness.
Stabilizing community lifelines becomes the primary effort during earthquake preparedness. When an earthquake occurs, there is a high probability of critical infrastructure being damaged, such as bridges, roads, and power lines. Therefore, efforts are focused on ensuring that these lifelines are stabilized to minimize the impact and facilitate emergency response.