What should be done with equipment that is at the end of its life cycle and that is being donated to a charity?
(a) remove all cds and dvds.
(b) remove all software licenses.
(c) sanitize it.
(d) install the original software.

C) Sanitize it

Explanation:

The system and equipment needs sanitization when it reach at the end of the life cycle and must ensure that they does not included any type of the sensitive data. As, sanitization is the process of remove and destroy all the data store in the memory device.    

Removing CD and DVDs is also the part in sanitation but many other element such as disk drive needs to be checked to ensure that they does not contain any type of information or data.

Removing all the software license and installing the original software, they both are not necessary require in the sanitization process.

Therefore, Option (C) is correct.