B because sun is the jey word hope tuis helps and if not im sorry hope this helsp
Answer:
Amount of food. She needs to varry the amount of plant food among the different groups so that she can tell how the amount of plant food affects number of beans produced.
The answer is a cotyledon
Idk but I’ll help you ask my friend:)
I would say b and a don't quote me if I'm wrong :P
