The correct option is B Statement I is correct and statement II is incorrect.
In a parallel circuit, positive terminals of all appliances and components are connected together and all negative terminals are connected together. Thus, even if one path is broken, the circuit is always intact.
Therefore, in a parallel circuit the electricity has more than one path to flow through.
On the other hand, to make a battery of two cells, the negative terminal of one cell must be connected to the positive terminal of the other cell.
Thus, statement I is correct and statement II is incorrect.
So, the correct option is B.