I need help please. I don't understand

C, identify the problem

Explanation:

The Engineering Design process goes like this:

1) Identify the problem

2) Collect information

3) Brainstorm & analyze ideas

4) Develop solutions and build a model(prototype)

5) Present your ideas to others for feedback/ test your model

6) Improve your design  

Hoped that helped ;)

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.