Which of the following techniques can be used to sanitize the data contained on a hard drive while allowing for the hard drive to be repurposed?

Degaussing involves using a powerful magnetic field to disrupt the magnetic domains on a hard drive, effectively erasing the data. However, this method renders the hard drive unusable, making it unsuitable for repurposing. Once degaussed, a hard drive cannot be recovered or reused.

A drive shredder physically destroys the hard drive by cutting it into small pieces, ensuring that data cannot be retrieved. Similar to degaussing, this method eliminates any possibility of repurposing the drive, as it is rendered completely inoperable post-destruction.

A retention platform is used to store and manage data rather than sanitize it. This method focuses on maintaining and protecting data rather than erasing it, making it irrelevant in the context of preparing a hard drive for repurposing.