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

by cartels in other countries, shipped by air, mail, or land. i cant really see your answer choices : /

oxygen, selenium, tellurium, and polonium.

they're all from the same group as sulfur (group 16).