CompTIA A+ 220-801

Answer: B - When repairing or upgrading laptop hardware, all of the procedures listed above should be followed except using a damp cloth to clean fans.

Key Takeaway: Although water is always dangerous for computers, the small size and close proximity of all components in a laptop make using any sort of liquid for cleaning a dangerous idea. Use anti-static compressed air to clean dirt and dust out of laptop fans. Labeling parts as you remove them, referring to manufacturer documentation, and wearing an ESD wristband are all proper procedures for working on laptop hardware.