Metamorphic means “.” A}to turn into rock
B]to make into minerals
C]to change form
D]to press down

In Greek metamorphic means 'to change form ' . Hence the answer to this question will be ;

C) To change form

h

the electrical  conductivity  of asolution  of an electrolyte is measured by determining the resistance of thesolution  between two flat or cylindrical electrodes separated by a fixed distance.