Magic Number

Is there a magic number for the number of investment alternatives in a 401(k) plan? No, but, there is a magic range. I have seen a plan that has 200 choices, most of which are inappropriate for an unsophisticated investor with a long term perspective. I have talked to people who are a part of this plan and most of them got confused and walked away. I have seen plans with as few as four choices, which is marginal, but more important than the number is the type of investment choices available....