Answer to Question 1
The effects of real GDP on consumption expenditure and imports are determined respectively by the marginal propensity to consume and the marginal propensity to import. In particular, the effect of a change in real GDP on consumption expenditure equals the marginal propensity to consume multiplied by the change in disposable income. Similarly, the effect of a change in real GDP on imports equals the marginal propensity to import multiplied by the change in real GDP.
Answer to Question 2
B