Over the last month, the Sampsons have been struggling with how to invest their sav- ings to support their children's college education. They previously considered stocks and bonds and are now seriously considering investing their money in mutual funds. They are looking to you for advice on which type of funds would be appropriate and whether they should invest their savings in one mutual fund or in several.

Why might mutual funds be more appropriate investments for the Sampsons than individual stocks or bonds?