Answer:
Putting all your eggs in one basket means in most cases: investing all of your money into one thing. The comparison is that if you put all of your eggs into one basket and something happens to the basket such as you dropping it, all of your eggs break and you have nothing left compared to distributing your eggs into two or more baskets so if something happens to the one, you still have your others eggs. If you invest all of your money into one company and the company fails, you have lost all of your money. Don't put all of your eggs in one basket.