To convert milliliters to liters, you need to divide by 1,000 because there are 1,000 milliliters in 1 liter.
So, to find the amount of lemonade in liters:
1,500 milliliters ÷ 1,000 = 1.5 liters
Therefore, the amount of lemonade Tony made is represented as 1.5 liters, which corresponds to option (A).