The opportunity cost of producing one more phone is always the same, regardless of how many phones are already being produced.

The opportunity cost of producing one more phone is not always the same; it can change based on how many phones are already being made. Opportunity cost refers to what you give up when you choose one option over another. For example, if a factory is making 10 phones and decides to make one more, it might have to reduce the production of another item, like tablets. However, if the factory is already making 100 phones, the resources needed for one more phone might come from reducing the number of other phones made instead. This means that the opportunity cost can vary depending on the current production levels and the resources available.