Question

the most effective way that the federal government gets states to go along with their goals and agenda is through what?
force
tax incentives
national awards

Explanation:

The federal - state relationship in the US is based on cooperation. Tax incentives are a powerful tool as states are often motivated by financial benefits to align with federal goals. Force is not a common or effective long - term approach in a democratic federal system. National awards are more symbolic and less impactful than financial incentives. Policy alone may not be enough to ensure state compliance.

Answer:

tax incentives