Introduction
In order to understand why distilled water is a bad conductor of electricity, we need to first understand the concept of conductivity and the factors that affect it. Conductivity refers to a material's ability to allow the flow of electric charges. Substances that can conduct electricity are called conductors, while those that cannot are called insulators.

Factors affecting conductivity
There are several factors that determine the conductivity of a substance. These include:
1. Presence of ions: Substances that contain freely moving ions are good conductors of electricity. Ions are electrically charged particles that carry the electric charge through a solution.
2. Concentration of ions: Higher concentrations of ions in a solution generally lead to better conductivity.
3. Mobility of ions: The ability of ions to move freely within a substance also affects its conductivity. If ions are strongly bound and cannot move, the substance will not conduct electricity effectively.

Explanation
Let's now consider the liquids mentioned in the options and analyze their conductivity properties:

- Lemon juice: Lemon juice is a good conductor of electricity because it contains citric acid, which dissociates into ions (H+ and C6H7O7-) when dissolved in water.

- Vinegar: Vinegar, like lemon juice, contains acetic acid that dissociates into ions (H+ and CH3COO-) in water. Therefore, vinegar is also a good conductor of electricity.

- Sea water: Sea water is a good conductor of electricity because it contains various dissolved salts, such as sodium chloride (NaCl). These salts dissociate into ions (Na+ and Cl-) in water, allowing the flow of electric charges.

- Distilled water: Distilled water is a poor conductor of electricity. Although water itself can dissociate into ions (H+ and OH-) to a small extent, the concentration of these ions is very low in pure water. Therefore, the conductivity of distilled water is significantly lower than that of the other liquids mentioned.

Conclusion
In conclusion, distilled water is a bad conductor of electricity because it has a low ion concentration and limited ion mobility. The other liquids mentioned (lemon juice, vinegar, and sea water) are all good conductors of electricity due to the presence of ions in their composition.

Yes