The Hall-He'oult process is expensive and consumes large amounts of
energy to produce __
O
Aluminum
Iron ore
O Gold
Silver
What is the answer

i'm hoping this is like a multiple answer question. if it is then it would be, the location of the plants and also the height of the plants since one she wants to know where in her garden the chamomile grows best. but also to see which plants grew better in the location she also has to measure the plant itself. (if you can only choose one answer than it would be c).