When must a scrum Team release each increment?

According to the Scrum Guide, a Scrum Team must release each Increment when it makes sense to do so, based on the value and feedback obtained from stakeholders. The decision to release an Increment is made by the Product Owner, who is responsible for maximizing the value of the product and the work of the Development Team. The other options are not valid, as they imply that releasing an Increment is either mandatory (such as after every Sprint), conditional (such as when the product is free of defects), or irrelevant (such as when the Scrum Team finishes their work).