question:  What is the most likely cause of the accident that displaced Marjorie and Donald from their home?
context: SCHOENHERR "What would you think," I asked Marjorie over supper, "if I should undertake to lead a junior achievement group this summer?" "Why, Donald," she said, "it could be quite interesting, if I understand what a junior achievement group is. Some groups have built up tidy little bank accounts which are available for later educational expenses." Marjorie put back her head and laughed, and I was forced to join her, for we both recognize that my understanding and "feel" for commercial matters—if I may use that expression—is almost nonexistent. Mr. McCormack is going to put up fifty dollars to buy any raw materials wanted Back in the old Ridgeville, fifty-odd miles to the south, we had our home almost paid for, when the accident occurred. It was in the path of the heaviest fallout, and we couldn't have kept on living there even if the town had stayed. When Ridgeville moved to its present site, so, of course, did we, which meant starting mortgage payments all over again. This was to be our headquarters and factory for the summer—a roomy unused barn belonging to the parents of one of the group members, Tommy Miller. The two on my right were cast in a different mold. Mary McCready was a big husky redhead of twelve, with a face full of freckles and an infectious laugh, and Tommy Miller, a few months younger, was just an average, extroverted, well adjusted youngster, noisy and restless, tee-shirted and butch-barbered. "The Miller boy and Mary McCready," he had said, "have exceptionally high IQ's—around one forty or one fifty. "You should be able to make ball bearings by molding, then densify them by electroplating." You're Dr. Matlack's son, aren't you? Healthy mice of the right strain," I explained to Tommy, "might be sold to laboratories. "Well, now," I admitted, "the market for red mice might be rather limited.
output:  Radioactive toxicity
options:  Food supply depletion  Radioactive toxicity  Viral contamination  Climate devastation