Contains more vitamin c than many other juices.
a. grape
b. apple
c. orange
d. cranberry

Orage juice contains more vitamin c than many other juices. 

I would 100% say (either) C. or D. i'm more leaning to the orange juice side. but i would still look up how much both have, then compare the 2 and find out which one has the most :) (still! i would pick orange juice, oranges are the fruit that everybody says "you need your vitamin c" then hands you an orange :) 

It's called the nephron.