A user reports that they are getting frequent delayed write messages throughout the day and are
experiencing sluggish performance. The technician suspects that the issue relates to the hard disk
drive. Which of the following would BEST help validate the diagnosis?

A.
System information

B.
Event viewer

C.
POST card

D.
SMART status

Explanation:
http://www.howtogeek.com/134735/how-to-see-if-your-hard-drive-is-dying/