The main reason governments address public problems through policy approaches is to ensure that the common good is maintained and protected. to maintain strict control of the nation’s economy and industries. to control the types and safety of products available to consumers. to protect the nation from sliding into debt and economic recession.

The best answer that completes the statement above is the first option. The main purpose for addressing the public problems by the government through policy approaches is "to ensure that the common good is protected and maintained." This is to ensure that rules and regulations are being followed and that citizens are free from harm. Hope this helps.