What is one disadvantage of lossy compression?

Lossy compression is a method of reducing file size by removing some data from the original file. This is particularly effective in formats like JPEG for images or MP3 for audio, where some loss of quality may not be noticeable to the user. The primary disadvantage of this method is that it results in a permanent loss of some original data. Once the file is compressed and saved, the discarded information cannot be recovered. This means that the quality may be compromised, affecting the usability of the file for tasks that require high fidelity to the original.

In contrast, options that suggest an increase in file size or require more storage space do not apply to lossy compression, as its purpose is to decrease file size. Enhancing file quality is also incorrect, as lossy compression typically results in a lower-quality output compared to the original. Thus, the statement about data loss accurately reflects a key drawback of using lossy compression techniques.