Final answer:
Option B). The author of the 1906 Life editorial seems critical of the electorate, viewing voters as easily manipulated, as suggested by the line 'our voters are an instrument to play upon'.
Step-by-step explanation:
Out of all the possible lines, the following one captures the essence of the author's feelings toward the current voting public in the Life editorial (November 15, 1906) excerpt: B. Right now, we can use our votes as a tool. This claim implies that the author has a cynical or disapproving view of the electorate, implying that they are easily swayed or persuaded rather than making their own decisions based on reason and independent thought.