Final answer:
The Volume gateway supports both cached volumes and stored volumes, where cached volumes keep frequently accessed data locally and the rest on Amazon S3, and stored volumes store the entire dataset locally and back it up to Amazon S3.
Step-by-step explanation:
The Volume gateway on the AWS Storage Gateway service supports two different volume configurations: cached volumes and stored volumes. With cached volumes, the primary data is stored in Amazon S3 and retains only a subset of the data - the most frequently accessed data - locally in your storage gateway. In contrast, stored volumes store the entire dataset locally on the on-premises storage hardware, and asynchronously back up this data to Amazon S3.
Therefore, the correct answer to the question is: c) Both cached and stored volumes.