Step 1: Pathophysiological Effects of Electric Shock:
An electric shock passing through a human body can severely disrupt the neural signals governing cardiac rhythm and pulmonary function. The victim's respiratory muscles can become paralyzed, causing immediate respiratory failure, asphyxia, or cardiac arrest.
Step 2: Emergency Response Priority:
Once the victim has been safely isolated from the live electrical source:
- Check for breathing and a pulse.
- If the victim has stopped breathing, artificial respiration (mouth-to-mouth resuscitation or CPR) must be administered immediately to restore oxygenation to the brain and prevent irreversible biological death.
Step 3: Analyzing Other Options:
- Pouring water (A): Extremely dangerous. Water is conductive, which can worsen electrocution or cause severe hypothermia.
- Rubbing the skin (C) Bandaging (D): Non-urgent treatments that do not address the critical, life-threatening situation of respiratory arrest.
Therefore, option (B) is the primary first-aid requirement.