The slope of LM curve is dependent upon the:

Question

Accepted Answer

The correct option is 3:
The LM (Liquidity preference-Money supply) curve illustrates the combinations of interest rates (r) and income levels (Y) where the money market is in equilibrium (Money Demand = Money Supply). The slope of the LM curve is mathematically determined by two key parameters: the interest elasticity of money demand (how sensitive money demand is to the interest rate, $h$) and the income elasticity of money demand (primarily the transactions demand, $k$). The higher the transactions demand for money (the income elasticity, $k$), the steeper the LM curve will be, because a small change in income requires a large change in the interest rate to restore equilibrium. Conversely, if money demand is highly sensitive to the interest rate (high $h$), the curve is flatter. Therefore, the slope fundamentally relies on the transaction demand function for money.

The incorrect option is 1:
Money supply in the economy is a parameter that shifts the LM curve, but it does not determine its slope. An increase in the money supply, for example, will shift the entire LM curve to the right, as a lower interest rate is needed at every income level to maintain money market equilibrium, but the steepness (slope) remains determined by the sensitivity parameters ($h$ and $k$).

The incorrect option is 2:
The price level in the economy is generally considered a factor that shifts the LM curve, similar to money supply. When the price level increases, the real money supply ($M/P$) decreases, causing the LM curve to shift upward and to the left. The price level itself is not the underlying behavioral relationship that defines the curve's slope.

The incorrect option is 4:
This option is incorrect because, as explained above, Money Supply (Option 1) and Price Level (Option 2) are shifting factors for the LM curve. Only the structural parameters of money demand, such as the transactions demand function (Option 3), determine how steeply the LM curve rises.