How is the storage capacity of a disk determined?

The storage capacity of a disk is primarily determined by the bits per inch of track and the tracks per inch of surface. This measurement reflects how much information can be stored on a given area of the disk. The bits per inch of track indicates how densely the data can be written along a single track, whereas the tracks per inch indicates how many individual tracks are available on the disk surface for data storage.

Stated simply, a disk with higher bits per inch can hold more data along its circumference, and a greater number of tracks allows for more concentric rings of data. Therefore, both of these factors work together to establish the total amount of data that can be stored on the disk, making this option the most comprehensive and accurate explanation of how storage capacity is assessed.

The other options do not provide a complete picture of storage capacity. While the number of sectors contributes to the overall storage, it doesn't cover the essential aspects of how data density is calculated across the disk's surface. Additionally, the overall diameter of the disk has its influence, but it does not solely determine capacity without considering the density of data storage. Lastly, the type of data stored does not affect the physical capacity of the disk; rather, it pertains to the format and structure of