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Since there are only two options for each question (true or false), the probability of guessing the correct answer to any one question is 1/2. To find the probability of guessing all 12 questions correctly, we need to multiply the probabilities of guessing each individual question correctly:
(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)*(1/2)
Simplifying this expression, we get:
(1/2)^12 = 1/4096
Therefore, the answer is A. Start Fraction 1 over 4096 End Fraction.