Final answer:
You can get whipped cream on a $1 milkshake, and there may be other toppings available for an extra cost.
Step-by-step explanation:
You can get whipped cream on a $1 milkshake. Whipped cream is a common topping for milkshakes and it adds a creamy and sweet flavor. Other toppings, such as caramel drizzle, fresh berries, chocolate chips, and crushed nuts, may be available as well, but they may come with an additional cost.