In 2022, an article in the Wall Street Journal on the recreational vehicle (RV) industry noted that some forecasters believed that the quantity of RVs sold was about to decline. Consider the following factors affecting the RV market:

a. Increased concern among some households that a recession might occur, which would reduce their future incomes

b. An increase in interest rates on loans from banks to finance the purchase of RVs

c. Higher gasoline prices

d. Reduced concern about the Covid–19 pandemic leading to an increased willingness to travel by air Briefly explain whether each of these factors would cause a movement along the demand curve for RVs or a shift in the demand curve for RVs. If you believe the demand curve would shift, briefly explain why it would shift and whether the curve would shift to the right or to the left.