Which of the following would improve the experimental design of this investigation? why?

safety goggles

root vegetable, such as a large carrot or potato

two metal forks

an edge or thin wall to freely balance the vegetable on, such as a cardboard box with its flaps taped down

Stay safe! Always wear your safety goggles. Be careful while sticking the forks into the vegetable. If you’re working outside a lab, make sure the area is clean so you can save the vegetable when you’re done.

Part A

Stick a fork into each end of

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.

with this one i know the answer in craters one reason i looked it up and i learned about it there is my evidence