Final answer:
Buyers who expect a good to be cheaper in the future may delay their purchase, leading to a decrease in the current demand for that good.
Step-by-step explanation:
Buyers who expect the price of a good to be lower next month may delay their purchase. This would decrease the current (or present) demand for the good. According to the law of demand, there is an inverse relationship between price and quantity demanded. If consumers anticipate a decrease in price, they are more likely to wait to purchase the good, leading to a reduction in demand in the present. Conversely, if they expect prices to rise, they may increase their purchase activity, which would increase present demand. All other factors affecting demand are assumed to be constant.