What does the marginal propensity to save (MPS) represent?

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the average portion of total income that is put asidethe proportion of an increase in income that is savedthe comparison of total savings to total incomethe comparison of total income to total savings

Explanation

Option B is correct because the marginal propensity to save measures the fraction of any additional income that is saved rather than spent. It differs from average saving ratios, which consider total income and savings.