A technician needs to replace a PCI card on a desktop safely. Which of the following would be
required prior to touching any of the computer parts within the desktop?

A.
Grounding wires

B.
Waterproof mat

C.
ESD strap

D.
Cable management straps

Explanation:

http://www.webopedia.com/TERM/E/ESD_wrist_strap.html