Which storage format allows for high-definition data storage in the Blu-ray family?

The Blu-ray family is specifically designed to support high-definition (HD) video and data storage, which distinguishes it from other formats. BD-ROM, or Blu-ray Disc Read-Only Memory, is a type of disc format that caters to this high-capacity storage requirement, typically allowing for significantly more data than DVDs or CDs. Blu-ray discs can store up to 25GB on a single-layer disc and 50GB on a dual-layer disc, making them ideal for high-definition movies and other large data files.

In comparison, the other options are tailored for different functionality and capacities. DVD-R discs provide less storage compared to Blu-ray, typically allowing for up to 4.7GB for a single-layer disc. CD-Rs offer even less, with a storage capacity of about 700MB. USB storage, while versatile and capable of storing large amounts of data, is not specific to any single format in the way that BD-ROM is. Therefore, the BD-ROM is the correct choice for high-definition data storage within the Blu-ray family.