To develop a calculator for reducing fractions using the prime factorization method, the appropriate choice among the options provided would be two queues to pop out the prime factors for comparison.
Using two queues allows for easy comparison of the prime factors: you can dequeue (pop out) the front element of both queues and check for common factors. This approach is efficient as you can traverse both sets of prime factors in a sequential order.
Other options, such as stacks or lists, have less suitable characteristics for this particular algorithm, as stacks operate on a last-in, first-out (LIFO) principle, making it less intuitive for comparison tasks where order matters, and lists would require additional looping sometimes to accomplish the same task efficiently.
Therefore, the best choice for this algorithm is two queues to pop out the prime factors for comparison.