Explanations:
To understand the storage capacity of different types of optical disks, it is important to know the basic characteristics of each. CDs (Compact Discs) and DVDs (Digital Versatile Discs) are both optical storage media, but they differ significantly in their storage capacity and capabilities.
A CD, or Compact Disc, is a type of optical disc used to store digital data. The standard CD can hold up to 700 MB of data. CDs were originally developed for audio storage and later became popular for storing computer data, including software and multimedia content. CDs use a single layer of data storage, and the data is read by a laser that focuses on the disc's surface.
On the other hand, a DVD, or Digital Versatile Disc, is an optical disc storage format that can hold significantly more data than a CD. A single-layer DVD can store up to 4.7 GB of data, which is more than six times the capacity of a CD. DVDs can also be double-layered, increasing the storage capacity to up to 8.5 GB. DVDs were designed to store high-definition video, which requires more storage space than audio or standard-definition video.
The increased storage capacity of DVDs is due to several factors, including the use of a smaller laser wavelength and tighter data pits on the disc surface. This allows for a higher density of data storage, resulting in a much larger capacity compared to CDs.
In summary, DVDs have a higher storage capacity than CDs, making them the correct answer to the question. DVDs can store up to 4.7 GB of data on a single layer, while CDs can only store up to 700 MB. This difference in storage capacity is crucial for applications that require large amounts of data, such as high-definition video and large software packages.