According to Keynesian economics, which fiscal policy measure is most effective during an economic recession?

According to Keynesian economics, the most effective fiscal policy measure during an economic recession is increased government spending. This approach works because when the economy is struggling, people often have less money to spend, which can lead to lower demand for goods and services. By the government stepping in and spending more, it can create jobs and stimulate demand, helping to boost the economy. For example, if the government invests in building new roads, it not only provides work for construction workers but also improves infrastructure, making it easier for businesses to operate. This combination of job creation and improved services can help pull the economy out of a recession.