Consumer confidence

The purpose of this question is for Jethro Jn-Baptiste to lead us in a discussion of, first, the determinants of the slope of the IS curve and, second, the determinants of the position, and shifts in the position of, the IS curve. As part of your discussion, please explain if changes in the following variables
would cause the IS curve to shift. Alternatively, which variables do not affect the position of the IS curve?
a) the marginal propensity to consume;
b) the interest rate;
c) the spending multiplier;
d) business confidence;
e) consumer confidence;
f) government spending; and
g) taxes.