What is the first step when scaling a graph?

The first step when scaling a graph is to identify the variables. Hope it helps! :D

I would say that in the diagram attached inside, if electrons flow from the right half-cell to the left one through the wire, the statement that is true should be the first one - A) the metal strip on the right has a lower activity than the one on the left.
However, I am not entirely sure about this one.