Answer:
Increasing government spending in the form of infrastructure and welfare
Explanation:
In order to reduce the national debt, the government need to take a conscious measure to use the government budget as little as possible.
Investment in infrastructures (such as military bases,. building new roads or parks) and government programs (such as expensive healthcare or government funded jobs) tend to take a large amount from the government budget. This will most likely resulted in the increase of national debt.