Answer:
Option 1 i.e., The price of a smartphone falls.
Step-by-step explanation:
The law of demand shows that even the amount of demand rises whenever the price drops and vise likewise. The following option here specifies that smartphone prices fall which implies that rises well into the quantities requested from smart smartphones. So it becomes the opposite connection among demanded price and quantity. Then choice A is right according to the law of demand.
Other options are not true because we already mentioned in the following description about the law of demand.