The conductivity of an electrolytic solution does not depend on

Osmotic pressure

The correct answer is Option (1) → Osmotic pressure

Conductivity of an electrolytic solution depends on:

• Concentration of electrolyte → more ions, higher conductivity
• Nature of electrolyte → strong/weak electrolyte affects ionization
• Temperature → higher temperature increases ion mobility

Osmotic pressure is unrelated to conductivity; it depends on the number of solute particles, not their charge mobility.