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

If the supply curve for a product is vertical, then the elasticity of supply is:D equal to zero.A vertical supply curve indicates that the quantity supplied does not change regardless of changes in price. This means that the supply is perfectly inelastic, and the elasticity of supply is zero.