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Answer: It would be A civilian group.
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Folklore can be described as the dissemination of any type of information through oral communication or through leading by example. This information will represent the collective ideas of a certain group of people and can be transmitted through mediums such as literature or knowledge. Nowadays the world has morphed into a technologically advanced sphere where all information can be acquired at the touch of a button. This however doesn't change the definition of folklore, it only changes the medium through which we share the information.
THE ANSWER IS:
Mr. Van Daan is stealing food, thus, Mrs. Frank wants them to leave the annex.
<span>B) disentanglement of any intricate problem</span>