Social Security is considered uncontrollable spending because its funding is dictated by legal obligations to beneficiaries, making it difficult for Congress to amend. This results in a significant portion of the federal budget being dedicated to the program, limiting flexibility in fiscal decision-making. Ultimately, changes to Social Security face substantial hurdles due to its established commitment to providing benefits legally to eligible citizens. ;
Social Security is classified as uncontrollable spending, meaning its funding is legally mandated based on eligible beneficiaries. This results in Congress facing challenges in altering the program's budget, as the government must fulfill its obligations to provide benefits. Therefore, option C, uncontrollable, is the correct choice.
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