3 Vegetable Seeds That Have a Large Yield Per Seed

If you had room to plant only three vegetables, what would they be and why? I was recently asked this question by a friend. Before I get into what I would grow let me address why I would grow the ones I did choose. If I only had space for three vegetables I would make sure I first grow something that has a high yield and second, make sure I am growing something that I and my family would enjoy eating.