Answer: B. Left-ward shifting of the demand curve
Explanation: A decrease in demand for a Normal goods shows that the demand for that product is deceased. Most normal goods experience shifts mainly causes by economic/ market forces which may include the change in price, change in income levels,change in Government spending etc. For a normal goods to have a shift to the left,it must have been faced with a decrease in demand which can be caused by one or more of the factors listed or other market conditions.