I think A is the answer it makes the most sense to me
A
B is wrong because mitochondria would likely absorb the stain even if it was dead.(And most cells that have been treated are dead anyway). C and D are just throwaway answers, you usually want to avoid the word "always" when drawing conclusions.
They lowered the risk of food being over/undercooked
YES!!!!!!!!!!
each and every molecule have a symmetry
The answer is C. Increase the amount of travel done by bike
