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.
Step-by-step 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.