When fragmentation occurs, the correct response is:
Data retrieval speeds will diminish on hard disk drive (HDD) because the physical disk heads have more physical movement, inducing more latency.
Fragmentation can lead to inefficiencies in how data is stored on a hard disk drive, making it take longer for the read/write heads to find and retrieve scattered pieces of data. This does not typically affect solid-state drives (SSDs) in the same way, as they do not rely on physical movement to access data.