Answer:
c) the change in saving divided by the change in disposable income.
Step-by-step explanation:
Marginal Propensity to Save (MPS) is defined as the proportion of the aggregate increase in income that is saved by a consumer rather than spent. MPS is in contrast to marginal propensity to consume (MPC) which is the proportion of aggregate increase in income that is consumed.
MPS is calculated as the change in savings divided by the change in income.
That is,
MPS=∆S/∆Y
Where,
∆S= change in savings
∆Y= Change in income
Marginal propensity to save changes with income level. The higher the income level; the higher the MPS, the lower the income level; the lower the MPS.