Answer:
The questionable assumption of the plan is (E): The size of the smallest dots that generally available electronic scanners can reproduce accurately will not decrease significantly in the near future.
Explanation:
Technological advances increase in an exponential rate, it took almost a hundred years for electricity to become part of almost every house in the world. Computers became a daily part of our lives in a few decades since its creation, and smartphones took every life aspect in less than a decade. Being so, we must assume that electronic scanners will also become more precise and available faster than expected, which will make the small dots strategy obsolete in no time.
Benevolent and Kindhearted are similar in meaning, kindhearted is typically defined as having a kind nature whereas benevolent is typically defined as being kindly.