Answer: increasing spending on defense and security-related programs.
Explanation: One way in which the government might respond to rising threats to national security through fiscal policy is by increasing spending on defense and security-related programs. This can include funding for the military, intelligence agencies, and border security. The government might also provide tax incentives or subsidies to encourage private companies to invest in security technologies or other measures to protect critical infrastructure. Additionally, the government may use fiscal policy to stimulate economic growth and increase the overall health of the economy, which can help to strengthen national security in the long run.