Given: ice cream shop offers 5 different flavors of ice cream and 12 different toppings.
The question is asking to find how many choices are possible for a single serving of ice cream with one topping .
As there are 5 different flavors and 12 different topping so each flavor can have all the 12 topping. Total number of choices possible for a single serving of ice cream with one topping = 12x5=60.