Final answer:
A conductivity meter's function and results depend on temperature, concentration of ions, and length of the conductivity cell.
Step-by-step explanation:
The function and results of a conductivity meter are dependent on temperature, concentration of ions in the solution, and the length of the conductivity cell.
The concentration of ions in the solution impacts the conductivity, with higher concentrations resulting in higher conductivity. Different substances will also affect conductivity differently, with strong electrolytes forming ions easily, weak electrolytes forming ions less easily, and non-electrolytes not forming ions in solution. Finally, temperature affects the solubility of the material being dissolved, which in turn affects conductivity.
Therefore, the correct answer is All of the above.