question:  What is the most likely reason for the junior achievement group's shared characteristics?
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. It's a privilege which I'm sure many educators must envy, teaching in Ridgeville, for our new school is a fine one, and our academic standards are high. It is an uneasy privilege then, at least sometimes, to teach my old-fashioned brand of science to these children of a new age. "It has the purpose," I told her, "of teaching the members something about commerce and industry. They manufacture simple compositions like polishing waxes and sell them from door-to-door. 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. When Ridgeville moved to its present site, so, of course, did we, which meant starting mortgage payments all over again. The three who were sitting to my left were the ones who had proposed the group in the first place. "Well, Mr. Henderson, a junior achievement group is a bunch of kids who get together to manufacture and sell things, and maybe make some money." "The Miller boy and Mary McCready," he had said, "have exceptionally high IQ's—around one forty or one fifty. The junior achievement idea has sparked their imaginations. If we should keep the achievement group going for several summers, it might be possible later on to carry out a safe synthesis of some sort. "Some," said Hilary, "and I've got a home laboratory."
output:  Their parents are all members of the Ridgeville Commission
options:  They have experienced expected and unanticipated consequences of nuclear fallout  Their parents are all members of the Ridgeville Commission  They are all actually androids that have been programmed by scientists of the Ridgeville Commission  They have been meeting secretly for years before they came together under the guise of the junior achievement group