Final answer:
The inner packaging of a decanter is typically discarded by the customer.
Step-by-step explanation:
A decanter is primarily used for storing and serving wine. The inner packaging is typically used to protect the wine during transportation, and it is usually discarded by the customer once the decanter is opened and the wine is consumed.
Therefore, the correct answer to the question is a) Discard it.
For example, when a customer purchases a bottle of wine that comes with a decanter, they will find inner packaging (such as foam or cardboard) inside the decanter. However, once the customer opens the decanter and pours the wine, they can remove and dispose of the inner packaging as it is no longer needed.