The answer to your question is,
C) Orange Juice. They need some sort of sweet item.
-Mabel <3
Advantages of using solar energy are pollution-free, noise-free, on installation it produces free energy, clean and renewable. Disadvantages include high cost, energy dependent on sunlight exposure, power stations are expensive to build and devices powered by solar energy cannot be used at night
number 2
number 2 because the colour doesnt matter