Question

To avoid electric shock:

• A. The insulation of wires must be of good quality
• B. Insulation should be checked from time to time
• C. The appliances must have its metallic case earthed
• D. All

Answer 1

The correct option is D All

To avoid electric shock

$\to$ The insulation of wires must be of good quality

$\to$ Insulation should be checked from time to time

$\to$ The appliances must have its metallic case earthed