The correct answer is: B. A strong electrolyte
A strong electrolyte is a substance that, when dissolved in water, completely dissociates into ions. This means that the solution will conduct electricity very well. Potassium chloride is a strong electrolyte because it is a salt. Salts are formed when an acid and a base react together. In the case of potassium chloride, the acid is hydrochloric acid and the base is potassium hydroxide. When these two substances react, they form potassium chloride and water. The potassium chloride then dissociates into potassium ions and chloride ions. These ions are able to carry an electric current, which is why potassium chloride is a strong electrolyte.
A weak electrolyte is a substance that, when dissolved in water, only partially dissociates into ions. This means that the solution
will conduct electricity less well than a strong electrolyte. Some examples of weak electrolytes include acetic acid and ammonia.A non-electrolyte is a substance that, when dissolved in water, does not dissociate into ions at all. This means that the solution will not conduct electricity. Some examples of non-electrolytes include sugar and alcohol.
Initially weak and then become a strong electrolyte is not a correct option.