If the supply curve for a product is horizontal, then the elasticity of supply is: equal to 1. greater than 1 but less than infinity. equal to infinity. equal to zero.

If the supply curve for a product is horizontal, it means that the quantity supplied can change without any change in price. This indicates that suppliers are willing to supply any amount of the product at a given price.<br /><br />In this case, the elasticity of supply is:<br /><br />**equal to infinity.**<br /><br />This is because even a tiny change in price would result in an infinitely large change in the quantity supplied.