In this edition of The Motley Fool's "Ask a Fool" series, Motley Fool One analyst Jason Moser takes a question from a reader who asks: "If you had one and only one stock to hold for the next five years, what would it be? For 10 years?" Jason talks about some of the most important qualities he looks for in long-term investments, including leadership, market opportunities, and the existence of a long-term trend, and why for one of these companies in particular, leadership is a crucial consideration.