I think the correct answer would be opportunity cost. It is the cost, benefit or the value that is taken from a person when he chooses another option. It represents the option that is given up for another alternative. Hope this answers the question.
The difference between a chosen investment and one that is passed up is opportunity cost. Opportunity cost is an economics term that denotes the trade-off you should consider every time you make a choice. It is the value of what you have to give up in order to choose something else.
