Answer: Option 'B' is correct.
Step-by-step explanation:
Movement along the demand curve is a graphical representation which means there is a change in quantity demanded for a particular good due to change in its price.
If the price increases, quantity demanded will fall , other factors remaining constant as there is a inverse relationship between price and quantity demanded i.e. stated in "Law of Demand".
So, In this case, there is a downward movement.
So, All non price determinants of demand are held constant.
Hence, Option 'B' is correct.