question:  What is the most likely reason why Peter, Doris, and Hilary were interested in joining the junior achievement group?
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. "Mr. McCormack called me to the office today, and told me that some of the children in the lower grades wanted to start one. "It has the purpose," I told her, "of teaching the members something about commerce and industry. 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. 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. You're going to decide what to do, and if it's safe and legal and possible to do with the starting capital we have, I'll go along with it and help in any way I can. The three who were sitting to my left were the ones who had proposed the group in the first place. Peter Cope, Jr. and Hilary Matlack were skinny kids, too. The group exchanged looks to see who would lead off, and Peter Cope seemed to be elected. "Well, sure, I suppose we want to," said Hilary. 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." Healthy mice of the right strain," I explained to Tommy, "might be sold to laboratories.
output:  Desire to test their creative ideas in a less restricted environment
options:  Desire to test their creative ideas in a less restricted environment  Desire to recruit Donald to work for the Commission of Ridgeville  Desire to challenge authority and wreak havoc on the town of Ridgeville  Desire to acquire a large amount of funds in order to eliminate the need to go to college