Answer:
D It will cause the demand curve to shift right
Step-by-step explanation:
Given
Increase in personal income
Required
The changes on the demand curve
On the demand curve, quantity is represented by the x-axis, while the y-axis represents price.
When personal income increases, the quantity of items purchased will increase.
This means that there will be a shift to the left on the demand curve.
Hence, (d) is correct