“Together, we determined that a modern economy requires railroads and highways to speed travel and commerce, schools and colleges to train our workers. Together, we discovered that a free market only thrives when there are rules to ensure competition and fair play. Together, we resolved that a great nation must care for the vulnerable, and protect its people from life’s worst hazards and misfortune. Through it all, we have never relinquished our skepticism of central authority, nor have we succumbed to the fiction that all society’s ills can be cured through government alone. Our celebration of initiative and enterprise, our insistence on hard work and personal responsibility, these are constants in our character. But we have always understood that when times change, so must we; that fidelity to our founding principles requires new responses to new challenges; that preserving our individual freedoms ultimately requires collective action." What is Obama's claim in this passage?
A. Railroads and highways are very important for transportation.
B. It's important to understand that the free market will always be free.
C. Hard work and responsibility should be celebrated.
D. America needs to stick together in order to be successful.