Answer: B
Explanation: The amount of salt in the inner circle is equal to the amount of salt in the outer circle.
One problem with this hypothesis is that the student didn't write about why this hypothesis might work - what is the underlying mechanism. The thing is that one might want to write the underlying mechanism or explanation in his hypothesis. Another problem with this hypothesis is that it's very hard to measure and be sure that following exposure to white chocolate, people are happier and that it's not a consequence of something else.
It takes place in the matrix of the mitochondria, which is the powerhouse of the cell.
Its A I just workered it out in my head
